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Go Back   Linux Archive > Debian > Debian Kernel

 
 
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Old 08-31-2011, 01:45 PM
Witold Baryluk
 
Default Bug#639901: linux-image-3.0.0-1-686-pae: WARNING at radeon_fence wait: GPU lockup -- when starting gdm3, some fonts glyphs missings

Package: linux-2.6
Version: 3.0.0-3
Severity: important

I was booting about 10 times on this kernel and didn't have this issues.
Also I had no problem with my hardware.

When I was in the middle of boot process, and when gdm3 just started
starting (Xorg already started, blanked screen, and showed
spiining waithing wheel), I hit Ctrl-Alt-F1 to go back to the console
(I often do so, to look for the rest of the boot process, and to work from
the console).

This times however, just moments after seeing console (gdm3 was still initializing
and displaying its loging screen in the background), I saw warning
at 106 seconds on the screen (kernel log below).

I waited for boot process to end.

After switching back to Alt-F7, some font glyphs was missing (not rendered).
It was missing glyphs in user logins menu and system menu (this with restart / poweroff).
Notably glyphs a and i was missing, few others, but few other letters was present.
missing glyphs renderes just like empty space (probably with variable size like original glyphs).
Background color wasn't changed on this empty space (just like putting there a space).

Restarting gdm3 solved this problem. Strange.

It was fresh boot, no
upgrades going on in the same time gdm was starting or running.

Do not know if this is reproductible even on my hardware,
and with what freqency.

Thanks.



-- Package-specific info:
** Version:
Linux version 3.0.0-1-686-pae (Debian 3.0.0-3) (ben@decadent.org.uk) (gcc version 4.5.3 (Debian 4.5.3-8) ) #1 SMP Sat Aug 27 16:41:03 UTC 2011

** Command line:
BOOT_IMAGE=/vmlinuz-3.0.0-1-686-pae root=/dev/mapper/sredniczarny-root ro resume=/dev/mapper/sredniczarny-swap_1 thinkpad_acpi.fan_control=1 threadirqs pcie_aspm=force pci=use_crs

** Tainted: WC (1536)
* Taint on warning.
* Module from drivers/staging has been loaded.

** Kernel log:
[ 92.128918] uhci_hcd 0000:00:1d.1: USB bus 3 deregistered
[ 92.128931] uhci_hcd 0000:00:1d.1: PCI INT B disabled
[ 92.128941] uhci_hcd 0000:00:1d.0: remove, state 4
[ 92.128948] usb usb2: USB disconnect, device number 1
[ 92.129344] uhci_hcd 0000:00:1d.0: USB bus 2 deregistered
[ 92.129360] uhci_hcd 0000:00:1d.0: PCI INT A disabled
[ 92.130174] WARNING! power/level is deprecated; use power/control instead
[ 92.169210] zram: module is from the staging directory, the quality is unknown, you have been warned.
[ 92.169601] zram: num_devices not specified. Using default: 1
[ 92.169605] zram: Creating 1 devices ...
[ 92.240635] Adding 524284k swap on /dev/zram0. Priority:10 extents:1 across:524284k SS
[ 92.844561] EXT4-fs (dm-1): re-mounted. Opts: errors=remount-ro,barrier=1,user_xattr,acl,commit=120,commit=0
[ 93.149118] EXT4-fs (dm-5): re-mounted. Opts: barrier=1,user_xattr,acl,commit=300,commit=0
[ 93.366060] EXT4-fs (dm-2): re-mounted. Opts: barrier=1,user_xattr,acl,commit=120,commit=0
[ 94.031297] EXT4-fs (dm-3): re-mounted. Opts: barrier=1,user_xattr,acl,commit=120,commit=0
[ 94.039447] EXT4-fs (dm-6): re-mounted. Opts: barrier=1,user_xattr,acl,commit=120,commit=0
[ 97.462655] Bridge firewalling registered
[ 97.722290] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 98.012760] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[ 98.030432] P-state transition latency capped at 20 uS
[ 98.207031] ADDRCONF(NETDEV_UP): virbr1: link is not ready
[ 98.940915] microcode: CPU0 sig=0x6d8, pf=0x20, revision=0x20
[ 98.956905] microcode: Microcode Update Driver: v2.00 <tigran@aivazian.fsnet.co.uk>, Peter Oruba
[ 99.477822] tun: Universal TUN/TAP device driver, 1.6
[ 99.483153] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
[ 104.172113] Ebtables v2.0 registered
[ 104.248398] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 106.968051] radeon 0000:01:00.0: GPU lockup CP stall for more than 10020msec
[ 106.973583] ------------[ cut here ]------------
[ 106.979133] WARNING: at /build/buildd-linux-2.6_3.0.0-3-i386-G7H4XL/linux-2.6-3.0.0/debian/build/source_i386_none/drivers/gpu/drm/radeon/radeon_fence.c:267 radeon_fence_wait+0x23d/0x2a7 [radeon]()
[ 106.990755] Hardware name: 2669UYD
[ 106.996607] GPU lockup (waiting for 0x00000075 last fence id 0x00000069)
[ 107.002573] Modules linked in: ip6table_filter ip6_tables ebtable_nat ebtables tun microcode ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state acpi_cpufreq mperf nf_conntrack cpufreq_userspace ipt_REJECT cpufreq_stats xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables bridge stp zram(C) dummy xfrm_user esp6 esp4 xfrm6_mode_beet xfrm4_mode_beet decnet cn cpufreq_conservative cpufreq_powersave bnep rfcomm bluetooth lib80211_crypt_ccmp binfmt_misc uinput deflate ctr camellia serpent blowfish cast5 des_generic xcbc rmd160 sha512_generic sha1_generic hmac crypto_null af_key ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd nfs lockd auth_rpcgss nfs_acl sunrpc irtty_sir sir_dev ircomm_tty ircomm irda crc_ccitt hdaps input_polldev snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_page_alloc radeonfb fb_ddc thinkpad_acpi snd_seq_midi snd_rawmidi s
nd_seq_midi_event snd_seq snd_timer snd_seq_device joydev snd radeon ipw2200 libipw ttm drm_kms_helper cfg80211 drm soundcore evdev i2c_algo_bit rfkill nvram rng_core battery ac psmouse power_supply video i2c_i801 parport_pc parport i2c_core pcspkr lib80211 serio_raw button processor ext4 jbd2 crc16 fuse btrfs zlib_deflate crc32c libcrc32c sha256_generic cbc dm_crypt dm_mod raid10 raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid1 raid0 multipath linear md_mod xenfs ext3 jbd mbcache cachefiles fscache twofish_i586 twofish_common aes_i586 aes_generic tpm_nsc tpm tpm_bios loop sg sr_mod sd_mod crc_t10dif cdrom ata_generic ata_piix ahci libahci libata tg3 libphy thermal thermal_sys ehci_hcd scsi_mod usbcore [last unloaded: uhci_hcd]
[ 107.081779] Pid: 2418, comm: Xorg Tainted: G C 3.0.0-1-686-pae #1
[ 107.089565] Call Trace:
[ 107.097172] [<c10360c5>] ? warn_slowpath_common+0x6a/0x7d
[ 107.104876] [<f87b6c61>] ? radeon_fence_wait+0x23d/0x2a7 [radeon]
[ 107.112668] [<c103613e>] ? warn_slowpath_fmt+0x28/0x2c
[ 107.120398] [<f87b6c61>] ? radeon_fence_wait+0x23d/0x2a7 [radeon]
[ 107.128083] [<c104bbd4>] ? wake_up_bit+0x16/0x16
[ 107.135628] [<f86193a9>] ? ttm_bo_wait+0x8e/0x132 [ttm]
[ 107.143262] [<f87c6140>] ? radeon_bo_wait+0x5b/0x7b [radeon]
[ 107.150789] [<f87c65b1>] ? radeon_gem_wait_idle_ioctl+0x2a/0x53 [radeon]
[ 107.158316] [<f85b7f29>] ? drm_ioctl+0x254/0x30b [drm]
[ 107.165857] [<f87c6587>] ? radeon_gem_busy_ioctl+0x6f/0x6f [radeon]
[ 107.173383] [<c100dbe9>] ? restore_i387_fxsave+0x61/0x6e
[ 107.180930] [<f85b7cd5>] ? drm_version+0x84/0x84 [drm]
[ 107.188447] [<c10d5829>] ? do_vfs_ioctl+0x48f/0x4c8
[ 107.195969] [<c100e4f5>] ? restore_i387_xstate+0x149/0x184
[ 107.203530] [<c12b29f0>] ? common_interrupt+0x30/0x38
[ 107.211084] [<c107262d>] ? audit_syscall_entry+0x113/0x135
[ 107.218661] [<c10d0f04>] ? path_put+0xb/0x13
[ 107.226205] [<c10d58a6>] ? sys_ioctl+0x44/0x66
[ 107.233722] [<c12b245f>] ? sysenter_do_call+0x12/0x28
[ 107.241143] ---[ end trace d7157cf52f9154bd ]---
[ 107.446138] Failed to wait GUI idle while programming pipes. Bad things might happen.
[ 107.452816] radeon 0000:01:00.0: (r300_asic_reset:419) RBBM_STATUS=0x80010140
[ 107.957871] radeon 0000:01:00.0: (r300_asic_reset:438) RBBM_STATUS=0x80010140
[ 108.458883] radeon 0000:01:00.0: (r300_asic_reset:450) RBBM_STATUS=0x00000140
[ 108.465466] radeon 0000:01:00.0: restoring config space at offset 0x1 (was 0x20100503, writing 0x20100507)
[ 108.465489] radeon 0000:01:00.0: GPU reset succeed
[ 108.471953] radeon 0000:01:00.0: GPU reset succeed
[ 108.478716] radeon 0000:01:00.0: f71d8000 unpin not necessary
[ 108.627142] [drm] radeon: 1 quad pipes, 1 Z pipes initialized.
[ 108.641478] [drm] PCIE GART of 512M enabled (table at 0xC0040000).
[ 108.645209] radeon 0000:01:00.0: WB enabled
[ 108.648806] [drm] radeon: ring at 0x00000000A0001000
[ 108.654146] [drm] ring test succeeded in 0 usecs
[ 108.657755] [drm] ib test succeeded in 1 usecs
[ 116.048042] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[ 116.070523] NFSD: starting 90-second grace period
[ 131.599107] NMI watchdog enabled, takes one hw-pmu counter.
[ 131.614577] ehci_hcd 0000:00:1d.7: PCI INT D disabled
[ 131.617651] ehci_hcd 0000:00:1d.7: PME# enabled
[ 131.632145] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D3
[ 131.748367] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 131.764057] ehci_hcd 0000:00:1d.7: BAR 0: set to [mem 0xb0000000-0xb00003ff] (PCI address [0xb0000000-0xb00003ff])
[ 131.766961] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 131.769874] ehci_hcd 0000:00:1d.7: restoring config space at offset 0xf (was 0x400, writing 0x40b)
[ 131.769898] ehci_hcd 0000:00:1d.7: restoring config space at offset 0x1 (was 0x2900000, writing 0x2900102)
[ 131.770600] ehci_hcd 0000:00:1d.7: PME# disabled
[ 131.770608] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 131.775741] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[ 131.778559] ehci_hcd 0000:00:1d.7: PCI INT D -> GSI 19 (level, low) -> IRQ 19
[ 131.781376] ehci_hcd 0000:00:1d.7: setting latency timer to 64
[ 205.009505] eth1: Setting MAC to 00:16:6f:ba:e0:60
[ 205.030562] ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 205.541064] ipw2200: Firmware error detected. Restarting.
[ 208.190146] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[ 427.700123] tg3 0000:02:00.0: BAR 0: set to [mem 0xb0200000-0xb020ffff 64bit] (PCI address [0xb0200000-0xb020ffff])
[ 427.862187] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 427.868955] ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 432.594577] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[ 436.704954] martian source 255.255.255.255 from 10.6.6.6, on dev eth1
[ 436.710772] ll header: ff:ff:ff:ff:ff:ff:00:4f:62:0d:c3:b0:08:00
[ 1208.454388] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled
[ 1208.459581] SGI XFS Quota Management subsystem
[ 1208.469301] JFS: nTxBlock = 8192, nTxLock = 65536
[ 1208.500945] NTFS driver 2.1.30 [Flags: R/W MODULE].
[ 1208.522051] QNX4 filesystem 0.2.3 registered.

** Model information
not available

** Loaded modules:
Module Size Used by
ufs 62285 0
qnx4 13043 0
hfsplus 70454 0
hfs 44920 0
minix 27187 0
ntfs 167263 0
vfat 17078 0
msdos 12863 0
fat 44609 2 vfat,msdos
jfs 135400 0
xfs 528352 0
reiserfs 176777 0
ext2 54204 0
ecb 12649 1
ecryptfs 75735 1
pktcdvd 26542 0
snd_hrtimer 12540 1
ip6table_filter 12492 0
ip6_tables 17255 1 ip6table_filter
ebtable_nat 12516 0
ebtables 17066 1 ebtable_nat
tun 17889 2
microcode 13401 0
ipt_MASQUERADE 12563 3
iptable_nat 12800 1
nf_nat 18007 2 ipt_MASQUERADE,iptable_nat
nf_conntrack_ipv4 13728 4 iptable_nat,nf_nat
nf_defrag_ipv4 12443 1 nf_conntrack_ipv4
xt_state 12455 1
acpi_cpufreq 12865 1
mperf 12421 1 acpi_cpufreq
nf_conntrack 43322 5 ipt_MASQUERADE,iptable_nat,nf_nat,nf_conntrack_ipv 4,xt_state
cpufreq_userspace 12520 0
ipt_REJECT 12454 2
cpufreq_stats 12758 0
xt_CHECKSUM 12431 1
iptable_mangle 12488 1
xt_tcpudp 12506 5
iptable_filter 12488 1
ip_tables 17149 3 iptable_nat,iptable_mangle,iptable_filter
x_tables 18076 12 ip6table_filter,ip6_tables,ebtables,ipt_MASQUERADE ,iptable_nat,xt_state,ipt_REJECT,xt_CHECKSUM,iptab le_mangle,xt_tcpudp,iptable_filter,ip_tables
bridge 60056 0
stp 12403 1 bridge
zram 13045 1
dummy 12660 0
xfrm_user 26769 1
esp6 12684 0
esp4 12680 0
xfrm6_mode_beet 12505 0
xfrm4_mode_beet 12504 0
decnet 51703 0 [permanent]
cn 12834 1
cpufreq_conservative 12987 0
cpufreq_powersave 12422 0
bnep 17301 2
rfcomm 28700 0
bluetooth 94736 10 bnep,rfcomm
lib80211_crypt_ccmp 12703 2
binfmt_misc 12880 1
uinput 12953 1
deflate 12495 0
ctr 12851 0
camellia 28988 0
serpent 24847 0
blowfish 16576 0
cast5 24773 0
des_generic 20771 0
xcbc 12629 0
rmd160 16584 0
sha512_generic 16675 0
sha1_generic 12511 0
hmac 12787 0
crypto_null 12636 0
af_key 31284 0
ib_iser 26957 0
rdma_cm 31105 1 ib_iser
ib_cm 31033 1 rdma_cm
iw_cm 12956 1 rdma_cm
ib_sa 18185 2 rdma_cm,ib_cm
ib_mad 31806 2 ib_cm,ib_sa
ib_core 38471 6 ib_iser,rdma_cm,ib_cm,iw_cm,ib_sa,ib_mad
ib_addr 12820 1 rdma_cm
iscsi_tcp 13313 0
libiscsi_tcp 17299 1 iscsi_tcp
libiscsi 31262 3 ib_iser,iscsi_tcp,libiscsi_tcp
scsi_transport_iscsi 25066 4 ib_iser,iscsi_tcp,libiscsi
nfsd 197906 13
nfs 218412 0
lockd 61314 2 nfsd,nfs
auth_rpcgss 32183 2 nfsd,nfs
nfs_acl 12463 2 nfsd,nfs
sunrpc 139050 19 nfsd,nfs,lockd,auth_rpcgss,nfs_acl
irtty_sir 12797 0
sir_dev 17229 1 irtty_sir
ircomm_tty 22973 0
ircomm 14111 1 ircomm_tty
irda 78683 3 sir_dev,ircomm_tty,ircomm
crc_ccitt 12331 1 irda
hdaps 13091 0
input_polldev 12802 1 hdaps
snd_intel8x0 22382 1
snd_ac97_codec 84197 1 snd_intel8x0
ac97_bus 12462 1 snd_ac97_codec
snd_pcm_oss 36377 0
snd_mixer_oss 17713 1 snd_pcm_oss
snd_pcm 53315 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_page_alloc 12899 2 snd_intel8x0,snd_pcm
radeonfb 52095 0
fb_ddc 12333 1 radeonfb
thinkpad_acpi 47642 0
snd_seq_midi 12744 0
snd_rawmidi 22621 1 snd_seq_midi
snd_seq_midi_event 13124 1 snd_seq_midi
snd_seq 39539 3 snd_seq_midi,snd_seq_midi_event
snd_timer 22027 3 snd_hrtimer,snd_pcm,snd_seq
snd_seq_device 12985 3 snd_seq_midi,snd_rawmidi,snd_seq
joydev 17006 0
snd 38562 13 snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_ oss,snd_pcm,thinkpad_acpi,snd_rawmidi,snd_seq,snd_ timer,snd_seq_device
radeon 579902 2
ipw2200 114371 0
libipw 26111 1 ipw2200
ttm 47307 1 radeon
drm_kms_helper 22688 1 radeon
cfg80211 112970 2 ipw2200,libipw
drm 129847 4 radeon,ttm,drm_kms_helper
soundcore 12992 1 snd
evdev 12995 15
i2c_algo_bit 12722 2 radeonfb,radeon
rfkill 18522 4 bluetooth,thinkpad_acpi,cfg80211
nvram 12893 1 thinkpad_acpi
rng_core 12616 0
battery 12957 0
ac 12552 0
psmouse 46216 0
power_supply 13283 3 radeon,battery,ac
video 17475 0
i2c_i801 12670 0
parport_pc 22059 0
parport 27241 1 parport_pc
i2c_core 19141 7 radeonfb,fb_ddc,radeon,drm_kms_helper,drm,i2c_algo _bit,i2c_i801
pcspkr 12515 0
lib80211 12870 3 lib80211_crypt_ccmp,ipw2200,libipw
serio_raw 12734 0
button 12810 0
processor 27382 2 acpi_cpufreq
ext4 274801 5
jbd2 56798 1 ext4
crc16 12327 2 bluetooth,ext4
fuse 56331 9
btrfs 487743 0
zlib_deflate 21266 2 deflate,btrfs
crc32c 12576 1
libcrc32c 12394 1 btrfs
sha256_generic 16709 2
cbc 12667 1
dm_crypt 18029 1
dm_mod 56894 27 dm_crypt
raid10 26085 0
raid456 52068 0
async_raid6_recov 12474 1 raid456
async_pq 12547 2 raid456,async_raid6_recov
raid6_pq 82721 2 async_raid6_recov,async_pq
async_xor 12390 3 raid456,async_raid6_recov,async_pq
xor 21608 1 async_xor
async_memcpy 12363 2 raid456,async_raid6_recov
async_tx 12540 5 raid456,async_raid6_recov,async_pq,async_xor,async _memcpy
raid1 26074 0
raid0 16868 0
multipath 12872 0
linear 12665 0
md_mod 81342 6 raid10,raid456,raid1,raid0,multipath,linear
xenfs 17366 0
ext3 99597 1
jbd 42027 1 ext3
mbcache 12898 3 ext2,ext4,ext3
cachefiles 35840 1
fscache 31952 2 nfs,cachefiles
twofish_i586 12453 0
twofish_common 20528 1 twofish_i586
aes_i586 16608 5
aes_generic 37066 1 aes_i586
tpm_nsc 12616 1
tpm 17531 1 tpm_nsc
tpm_bios 12832 1 tpm
loop 17866 0
sg 21564 0
sr_mod 17478 0
sd_mod 35493 3
crc_t10dif 12332 1 sd_mod
cdrom 34689 2 pktcdvd,sr_mod
ata_generic 12439 0
ata_piix 21110 3
ahci 20897 0
libahci 18231 1 ahci
libata 133339 4 ata_generic,ata_piix,ahci,libahci
tg3 108907 0
libphy 18546 1 tg3
thermal 13138 0
thermal_sys 17677 3 video,processor,thermal
ehci_hcd 35401 0
scsi_mod 135178 8 ib_iser,iscsi_tcp,libiscsi,scsi_transport_iscsi,sg ,sr_mod,sd_mod,libata
usbcore 104234 2 ehci_hcd

** Network interface configuration:

auto lo
iface lo inet loopback
post-up /sbin/ip link set dev lo mtu 65536 || true








iface pan0 inet static
address 10.0.42.1
netmask 255.255.255.0
post-up /sbin/iptables -t mangle -I PREROUTING -i eth1 -j TTL --ttl-inc 1
post-up /sbin/iptables -t nat -I POSTROUTING -s 10.0.42.0/24 -o eth1 -j MASQUERADE

iface tun0 inet static
pre-up ssh -N -f -w 0:0 149.156.82.206 'ifdown tun0; ifup tun0'
pre-up sleep 5
address 10.4.0.200
pointopoint 10.4.0.100
netmask 255.255.255.0
up /sbin/ip r add 10.4.0.0/24 via 10.4.0.200 dev tun0
up /sbin/ip r add 149.156.89.111 via 10.4.0.200 dev tun0
down /sbin/ip r del 149.156.89.111 via 10.4.0.200 dev tun0
down /sbin/ip r del 10.4.0.0/24 via 10.4.0.200 dev tun0

** Network status:
*** IP interfaces and addresses:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
link/ether aa:00:04:00:0a:04 brd ff:ff:ff:ff:ff:ff
dnet 1.10/16 scope global eth0
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:16:6f:ba:e0:60 brd ff:ff:ff:ff:ff:ff
inet 10.6.6.11/24 brd 10.6.6.255 scope global eth1
inet6 fe80::216:6fff:feba:e060/64 scope link
valid_lft forever preferred_lft forever
4: dummy0: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1370 qdisc noqueue state UNKNOWN
link/ether ba:9f:a6:b8:64:3c brd ff:ff:ff:ff:ff:ff
inet 1.0.0.1/24 scope global dummy0:1
inet6 2001:1d:de37:bbda:2c0d:4589:93bd:6f8f/28 scope global
valid_lft forever preferred_lft forever
inet6 fe80::b89f:a6ff:feb8:643c/64 scope link
valid_lft forever preferred_lft forever
5: virbr1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN
link/ether de:b4:25:4c:11:8d brd ff:ff:ff:ff:ff:ff
inet 192.168.130.1/24 brd 192.168.130.255 scope global virbr1
8: teredo: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1280 qdisc pfifo_fast state UNKNOWN qlen 500
link/none
inet6 2001:0:53aa:64c:1430:752f:a42a:f8/32 scope global
valid_lft forever preferred_lft forever
inet6 fe80::ffff:ffff:ffff/64 scope link
valid_lft forever preferred_lft forever

*** Device statistics:
Inter-| Receive | Transmit
face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
lo: 263680 1167 0 0 0 0 0 0 263680 1167 0 0 0 0 0 0
eth0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
eth1: 1073898 2219 3 3 0 0 0 0 402899 2332 0 0 0 0 0 0
dummy0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
virbr1: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
teredo: 81971 390 0 0 0 0 0 0 68949 463 0 0 0 0 0 0

*** Protocol statistics:
Ip:
2361 total packets received
0 forwarded
0 incoming packets discarded
2280 incoming packets delivered
2420 requests sent out
4361 dropped because of missing route
30 reassemblies required
15 packets reassembled ok
Icmp:
26 ICMP messages received
0 input ICMP message failed.
ICMP input histogram:
destination unreachable: 6
echo replies: 20
44 ICMP messages sent
0 ICMP messages failed
ICMP output histogram:
destination unreachable: 24
echo request: 20
IcmpMsg:
InType0: 20
InType3: 6
OutType3: 24
OutType8: 20
Tcp:
60 active connections openings
16 passive connection openings
5 failed connection attempts
0 connection resets received
5 connections established
1072 segments received
1047 segments send out
28 segments retransmited
0 bad segments received.
7 resets sent
Udp:
1229 packets received
22 packets to unknown port received.
0 packet receive errors
1387 packets sent
UdpLite:
TcpExt:
1 invalid SYN cookies received
24 TCP sockets finished time wait in fast timer
37 delayed acks sent
Quick ack mode was activated 6 times
105 packets directly queued to recvmsg prequeue.
48454 bytes directly received in process context from prequeue
388 packet headers predicted
35 packets header predicted and directly queued to user
253 acknowledgments not containing data payload received
37 predicted acknowledgments
2 times recovered from packet loss by selective acknowledgements
2 congestion windows recovered without slow start after partial ack
1 timeouts after SACK recovery
1 timeouts in loss state
7 fast retransmits
6 retransmits in slow start
5 other TCP timeouts
1 SACK retransmits failed
6 DSACKs sent for old packets
2 DSACKs received
2 DSACKs for out of order packets received
1 connections aborted due to timeout
TCPDSACKIgnoredNoUndo: 2
TCPSackShiftFallback: 17
IPReversePathFilter: 2
IpExt:
InMcastPkts: 78
OutMcastPkts: 61
InOctets: 1066789
OutOctets: 394705
InMcastOctets: 17456
OutMcastOctets: 15316


** PCI devices:
00:00.0 Host bridge [0600]: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller [8086:2590] (rev 03)
Subsystem: IBM ThinkPad Z60t [1014:0575]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 0
Capabilities: <access denied>

00:01.0 PCI bridge [0604]: Intel Corporation Mobile 915GM/PM Express PCI Express Root Port [8086:2591] (rev 03) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00002000-00002fff
Memory behind bridge: b0100000-b01fffff
Prefetchable memory behind bridge: c0000000-c7ffffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1c.0 PCI bridge [0604]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 [8086:2660] (rev 03) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 00008000-00008fff
Memory behind bridge: b0200000-b02fffff
Prefetchable memory behind bridge: 0000000080000000-00000000801fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1c.2 PCI bridge [0604]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 3 [8086:2664] (rev 03) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Bus: primary=00, secondary=03, subordinate=0a, sec-latency=0
I/O behind bridge: 00003000-00003fff
Memory behind bridge: b2000000-b3ffffff
Prefetchable memory behind bridge: 00000000c8000000-00000000c80fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1d.0 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 [8086:2658] (rev 03) (prog-if 00 [UHCI])
Subsystem: IBM Device [1014:0565]
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 16
Region 4: I/O ports at 1800 [size=32]

00:1d.1 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 [8086:2659] (rev 03) (prog-if 00 [UHCI])
Subsystem: IBM Device [1014:0565]
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin B routed to IRQ 17
Region 4: I/O ports at 1820 [size=32]

00:1d.2 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 [8086:265a] (rev 03) (prog-if 00 [UHCI])
Subsystem: IBM Device [1014:0565]
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin C routed to IRQ 18
Region 4: I/O ports at 1840 [size=32]

00:1d.3 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4 [8086:265b] (rev 03) (prog-if 00 [UHCI])
Subsystem: IBM Device [1014:0565]
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin D routed to IRQ 19
Region 4: I/O ports at 1860 [size=32]

00:1d.7 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller [8086:265c] (rev 03) (prog-if 20 [EHCI])
Subsystem: IBM Device [1014:0566]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin D routed to IRQ 19
Region 0: Memory at b0000000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev d3) (prog-if 01 [Subtractive decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Bus: primary=00, secondary=0b, subordinate=0e, sec-latency=64
I/O behind bridge: 00004000-00007fff
Memory behind bridge: b4000000-bfffffff
Prefetchable memory behind bridge: 00000000d0000000-00000000d7ffffff
Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>

00:1e.2 Multimedia audio controller [0401]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller [8086:266e] (rev 03)
Subsystem: IBM Device [1014:0567]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 22
Region 0: I/O ports at 1c00 [size=256]
Region 1: I/O ports at 1880 [size=64]
Region 2: Memory at b0000800 (32-bit, non-prefetchable) [size=512]
Region 3: Memory at b0000400 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>
Kernel driver in use: Intel ICH

00:1f.0 ISA bridge [0601]: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge [8086:2641] (rev 03)
Subsystem: IBM Device [1014:0568]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0

00:1f.2 IDE interface [0101]: Intel Corporation 82801FBM (ICH6M) SATA Controller [8086:2653] (rev 03) (prog-if 80 [Master])
Subsystem: IBM Device [1014:056a]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Region 0: I/O ports at 01f0 [size=8]
Region 1: I/O ports at 03f4 [size=1]
Region 2: I/O ports at 0170 [size=8]
Region 3: I/O ports at 0374 [size=1]
Region 4: I/O ports at 18c0 [size=16]
Capabilities: <access denied>
Kernel driver in use: ata_piix

00:1f.3 SMBus [0c05]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller [8086:266a] (rev 03)
Subsystem: IBM Device [1014:056b]
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 23
Region 4: I/O ports at 18e0 [size=32]
Kernel driver in use: i801_smbus

01:00.0 VGA compatible controller [0300]: ATI Technologies Inc M22 [Mobility Radeon X300] [1002:5460] (prog-if 00 [VGA controller])
Subsystem: IBM Device [1014:056e]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 43
Region 0: Memory at c0000000 (32-bit, prefetchable) [size=128M]
Region 1: I/O ports at 2000 [size=256]
Region 2: Memory at b0100000 (32-bit, non-prefetchable) [size=64K]
[virtual] Expansion ROM at b0120000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: radeon

02:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM5751M Gigabit Ethernet PCI Express [14e4:167d] (rev 11)
Subsystem: IBM ThinkPad Z60t [1014:0577]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at b0200000 (64-bit, non-prefetchable) [size=64K]
Expansion ROM at <ignored> [disabled]
Capabilities: <access denied>
Kernel driver in use: tg3

0b:00.0 CardBus bridge [0607]: Ricoh Co Ltd RL5c476 II [1180:0476] (rev 8d)
Subsystem: IBM ThinkPad Z60t [1014:056c]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64
Interrupt: pin A routed to IRQ 16
Region 0: Memory at b4000000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=0b, secondary=0c, subordinate=0d, sec-latency=176
Memory window 0: d0000000-d3fff000 (prefetchable)
Memory window 1: b8000000-bbfff000 (prefetchable)
I/O window 0: 00004000-000040ff
I/O window 1: 00004400-000044ff
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt+ PostWrite+
16-bit legacy interface ports at 0001

0b:02.0 Network controller [0280]: Intel Corporation PRO/Wireless 2915ABG [Calexico2] Network Connection [8086:4224] (rev 05)
Subsystem: Intel Corporation Device [8086:1011]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64 (750ns min, 6000ns max), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 21
Region 0: Memory at b4001000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: ipw2200


** USB devices:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 3.0.0-1-686-pae (SMP w/1 CPU core)
Locale: LANG=pl_PL.UTF-8, LC_CTYPE=pl_PL.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to pl_PL.UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages linux-image-3.0.0-1-686-pae depends on:
ii debconf [debconf-2.0] 1.5.41
ii initramfs-tools [linux-initramfs-tool] 0.99
ii linux-base 3.3
ii module-init-tools 3.16-1

Versions of packages linux-image-3.0.0-1-686-pae recommends:
ii firmware-linux-free 3
ii libc6-i686 2.13-18

Versions of packages linux-image-3.0.0-1-686-pae suggests:
pn grub-pc 1.99-11
pn linux-doc-3.0.0 <none>

Versions of packages linux-image-3.0.0-1-686-pae is related to:
ii firmware-bnx2 <none>
ii firmware-bnx2x <none>
ii firmware-ipw2x00 0.33
ii firmware-ivtv <none>
ii firmware-iwlwifi <none>
ii firmware-linux <none>
ii firmware-linux-nonfree 0.33
ii firmware-qlogic <none>
ii firmware-ralink <none>
ii xen-hypervisor-4.1-i386 [xen-hypervisor] 4.1.1-2

-- debconf information:
linux-image-3.0.0-1-686-pae/postinst/ignoring-ramdisk:
linux-image-3.0.0-1-686-pae/postinst/missing-firmware-3.0.0-1-686-pae:
linux-image-3.0.0-1-686-pae/prerm/removing-running-kernel-3.0.0-1-686-pae: true
linux-image-3.0.0-1-686-pae/postinst/depmod-error-initrd-3.0.0-1-686-pae: false



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Archive: 20110831134532.21915.41388.reportbug@sredniczarny. smp.if.uj.edu.pl">http://lists.debian.org/20110831134532.21915.41388.reportbug@sredniczarny. smp.if.uj.edu.pl
 
Old 09-01-2011, 04:27 AM
Ben Hutchings
 
Default Bug#639901: linux-image-3.0.0-1-686-pae: WARNING at radeon_fence wait: GPU lockup -- when starting gdm3, some fonts glyphs missings

On Wed, 2011-08-31 at 15:45 +0200, Witold Baryluk wrote:
> Package: linux-2.6
> Version: 3.0.0-3
> Severity: important
>
> I was booting about 10 times on this kernel and didn't have this issues.
> Also I had no problem with my hardware.
>
> When I was in the middle of boot process, and when gdm3 just started
> starting (Xorg already started, blanked screen, and showed
> spiining waithing wheel), I hit Ctrl-Alt-F1 to go back to the console
> (I often do so, to look for the rest of the boot process, and to work from
> the console).
>
> This times however, just moments after seeing console (gdm3 was still initializing
> and displaying its loging screen in the background), I saw warning
> at 106 seconds on the screen (kernel log below).

Please report this upstream at <https://bugs.freedesktop.org> under
product 'DRI', component 'DRM/Radeon'. Let us know the bug number or
URL so we can track it.

> I waited for boot process to end.
>
> After switching back to Alt-F7, some font glyphs was missing (not rendered).
> It was missing glyphs in user logins menu and system menu (this with restart / poweroff).
> Notably glyphs a and i was missing, few others, but few other letters was present.
> missing glyphs renderes just like empty space (probably with variable size like original glyphs).
> Background color wasn't changed on this empty space (just like putting there a space).
>
> Restarting gdm3 solved this problem. Strange.
[...]

If the kernel driver resets the GPU, it can presumably destroy data
stored in the GPU memory by the X driver. If you restart gdm then you
are restarting the X server which will then reinitialise this data.

Ben.
 
Old 09-01-2011, 04:27 AM
Ben Hutchings
 
Default Bug#639901: linux-image-3.0.0-1-686-pae: WARNING at radeon_fence wait: GPU lockup -- when starting gdm3, some fonts glyphs missings

On Wed, 2011-08-31 at 15:45 +0200, Witold Baryluk wrote:
> Package: linux-2.6
> Version: 3.0.0-3
> Severity: important
>
> I was booting about 10 times on this kernel and didn't have this issues.
> Also I had no problem with my hardware.
>
> When I was in the middle of boot process, and when gdm3 just started
> starting (Xorg already started, blanked screen, and showed
> spiining waithing wheel), I hit Ctrl-Alt-F1 to go back to the console
> (I often do so, to look for the rest of the boot process, and to work from
> the console).
>
> This times however, just moments after seeing console (gdm3 was still initializing
> and displaying its loging screen in the background), I saw warning
> at 106 seconds on the screen (kernel log below).

Please report this upstream at <https://bugs.freedesktop.org> under
product 'DRI', component 'DRM/Radeon'. Let us know the bug number or
URL so we can track it.

> I waited for boot process to end.
>
> After switching back to Alt-F7, some font glyphs was missing (not rendered).
> It was missing glyphs in user logins menu and system menu (this with restart / poweroff).
> Notably glyphs a and i was missing, few others, but few other letters was present.
> missing glyphs renderes just like empty space (probably with variable size like original glyphs).
> Background color wasn't changed on this empty space (just like putting there a space).
>
> Restarting gdm3 solved this problem. Strange.
[...]

If the kernel driver resets the GPU, it can presumably destroy data
stored in the GPU memory by the X driver. If you restart gdm then you
are restarting the X server which will then reinitialise this data.

Ben.
 

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