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Old 06-29-2011, 07:45 PM
Nils Kassube
 
Default Wireless on 10.10

Bob H. wrote:
> I have a Belkin G wireless router which barely works on any Linux I
> have, but works fine on my wife's XP. Before I start buying one each
> of every brand, has anyone found what works on Ubuntu? Thanx much;
> Bob H.

I have two routers: WRT54GL and TL-WR1043N. The former has the
disadvantage that it works only with up to 54 Mbit/s and the switch is
only 10/100 Mbit/s. The latter has a gigabit switch and wireless N
standard. Nowadays I wouldn't buy a G standard router. However don't
replace the original firmware of the TL-WR1043N. The openwrt firmware
sometimes forgets the connected clients. The original firmware didn't
have that problem.

OTOH, why do you think it is a problem of the router? I'd rather suppose
it is a problem of the wireless adapter of your Ubuntu machine. What
wireless card do you have in that machine? With a card that uses the
ath9k driver I have the same problem like the TL-WR1043N with openwrt
firmware (yes, that firmware uses the ath9k driver as well). But I don't
have a problem with the Intel ipw2200bg or an Atheros card which uses
the ath5k driver.


Nils

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From: "Stamper, Brian P. (ARC-D)[Stinger Ghaffarian Technologies Inc. (SGT
Inc.)]" <brian.p.stamper@nasa.gov>
To: device-mapper development <dm-devel@redhat.com>
Date: Wed, 29 Jun 2011 14:47:25 -0500
Thread-Topic: [dm-devel] Fedora 15 dm-linear device lookup failed
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I was able to boot this system by taking an initramfs from another Fedora 1=
5 test system and putting it in /boot and referencing it in grub.conf. How=
ever, I need to find out why an initramfs I build on the system is unable t=
o boot.

When I'm in dracut, I was able to do some checking. Using the lvm commands=
, I was able to activate and deactivate the vg, display the lvs, but not us=
e them. I would get "device not found", and in /dev/mapper, the lvm device=
s were not there. There were other lvm devices there, but not from my prim=
ary system lvm. The only thing that stands out about it is that it is ext4=
, not ext3.

Comparing the decompiled initrds, there's no modules that stand out. Sas.o=
ut is a listing of the WORKING initrd, tfs.out is the NOT WORKING initrd.

[root@testfs ramdisks]# diff sas.out tfs.out
718d717
< ./lib/firmware/ql2500_fw.bin
1248,1249d1246
< ./etc/ld.so.conf.d/openmotif-64.conf
< ./etc/ld.so.conf.d/kernel-2.6.38.7-30.fc15.x86_64.conf
1252c1249
< ./etc/ld.so.conf.d/kernel-2.6.34.8-68.fc13.x86_64.conf
---
> ./etc/ld.so.conf.d/qt-x86_64.conf
1262d1258
< ./etc/modprobe.d/openfwwf.conf
1278a1275
> ./etc/udev/rules.d/40-multipath.rules
1317a1315
> ./lib64/libcryptsetup.so.1.2.0
1322a1321
> ./lib64/libcap.so
1407d1405
< ./lib64/libcryptsetup.so.1.1.0
1419a1418
> ./lib64/libnss_files-2.12.2.so
1480a1480
> ./usr/bin/checkisomd5
1491d1490
< ./usr/lib64/libnss_files.so
1517a1517
> ./usr/share/plymouth/themes/default.plymouth

Nothing there looks relevant. Libcryptsetup needs updating on the test sys=
tem I pulled the initrd from. The q-logic firmware is irrelevant. There a=
re a couple of older kernels on the test system. Libcap.so is a dependency=
of legato backup software. Libnss_files should have nothing to do with ac=
cessing an LVM.

So I'm stuck. My system is up, but only if I build an initrd on another sy=
stem and copy it over, meaning next time I update the kernel it will not bo=
ot. Nothing's jumping out at me as obviously missing modules from the brok=
en initrd. Where else can I look?

-Brian




On 6/29/11 1:45 AM, "Brian Stamper" <brian.p.stamper@nasa.gov> wrote:

I just upgraded a Fedora system from 13 to 15, and now I can't get it to bo=
ot. I'm getting dumped to a dracut shell and getting the error dm-linear d=
evice lookup failed. In the dracut output with debug on, I see dracut scan=
my drives, and I see it find my 3 LVs, but it then tries to do something w=
ith them, I get the error, and it then fails out with root device not found=
and drops me into dracut.

Here's the odd thing, booting off the rescue dvd my volumes are fine. The =
LVM can be mounted no problem.

This makes me think that there's something missing from the kernel or initr=
d. I can't really figure out what though. I've gone through the output of=
lsmod when running from the rescue dvd. I've even build a few ramdisks in=
cluding all the modules that I thought might be related (dm, lvm, mdraid, d=
mraid, multipath). I tried building them with mkinitrd -with=3Dmodule, and=
I tried again with dracut -add=3Dmodules. No change in results.

I'm not sure where to go from here. I feel like the system can be rescued,=
but I don't know how to work backward through dracut to find out why it's =
unable to find my root volume. Any help would be appreciated. Cross-posti=
ng to lvm.

Thanks,
-Brian

--_000_CA30CF5D11CADbrianpstampernasagov_
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<HTML>
<HEAD>
<TITLE>Re: [dm-devel] Fedora 15 dm-linear device lookup failed</TITLE>
</HEAD>
<BODY>
<FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'font-size:=
11pt'><BR>
I was able to boot this system by taking an initramfs from another Fedora 1=
5 test system and putting it in /boot and referencing it in grub.conf. &nbs=
p;However, I need to find out why an initramfs I build on the system is una=
ble to boot.<BR>
<BR>
When I’m in dracut, I was able to do some checking. &nbsp;Using the l=
vm commands, I was able to activate and deactivate the vg, display the lvs,=
but not use them. &nbsp;I would get “device not found”, and in=
/dev/mapper, the lvm devices were not there. &nbsp;There were other lvm de=
vices there, but not from my primary system lvm. &nbsp;The only thing that =
stands out about it is that it is ext4, not ext3.<BR>
<BR>
Comparing the decompiled initrds, there’s no modules that stand out. =
&nbsp;Sas.out is a listing of the WORKING initrd, tfs.out is the NOT WORKIN=
G initrd.<BR>
<BR>
[root@testfs ramdisks]# diff sas.out tfs.out <BR>
718d717<BR>
&lt; ./lib/firmware/ql2500_fw.bin<BR>
1248,1249d1246<BR>
&lt; ./etc/ld.so.conf.d/openmotif-64.conf<BR>
&lt; ./etc/ld.so.conf.d/kernel-2.6.38.7-30.fc15.x86_64.conf<BR>
1252c1249<BR>
&lt; ./etc/ld.so.conf.d/kernel-2.6.34.8-68.fc13.x86_64.conf<BR>
---<BR>
&gt; ./etc/ld.so.conf.d/qt-x86_64.conf<BR>
1262d1258<BR>
&lt; ./etc/modprobe.d/openfwwf.conf<BR>
1278a1275<BR>
&gt; ./etc/udev/rules.d/40-multipath.rules<BR>
1317a1315<BR>
&gt; ./lib64/libcryptsetup.so.1.2.0<BR>
1322a1321<BR>
&gt; ./lib64/libcap.so<BR>
1407d1405<BR>
&lt; ./lib64/libcryptsetup.so.1.1.0<BR>
1419a1418<BR>
&gt; ./lib64/libnss_files-2.12.2.so<BR>
1480a1480<BR>
&gt; ./usr/bin/checkisomd5<BR>
1491d1490<BR>
&lt; ./usr/lib64/libnss_files.so<BR>
1517a1517<BR>
&gt; ./usr/share/plymouth/themes/default.plymouth<BR>
<BR>
Nothing there looks relevant. &nbsp;Libcryptsetup needs updating on the tes=
t system I pulled the initrd from. &nbsp;The q-logic firmware is irrelevant=
. &nbsp;There are a couple of older kernels on the test system. &nbsp;Libca=
p.so is a dependency of legato backup software. &nbsp;Libnss_files should h=
ave nothing to do with accessing an LVM.<BR>
<BR>
So I’m stuck. &nbsp;My system is up, but only if I build an initrd on=
another system and copy it over, meaning next time I update the kernel it =
will not boot. &nbsp;Nothing’s jumping out at me as obviously missing=
modules from the broken initrd. &nbsp;Where else can I look?<BR>
<BR>
-Brian<BR>
<BR>
<BR>
<BR>
<BR>
On 6/29/11 1:45 AM, &quot;Brian Stamper&quot; &lt;<a href=3D"brian.p.stampe=
r@nasa.gov">brian.p.stamper@nasa.gov</a>&gt; wrote:<BR>
<BR>
</SPAN></FONT><BLOCKQUOTE><FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"=
><SPAN STYLE=3D'font-size:11pt'>I just upgraded a Fedora system from 13 to =
15, and now I can’t get it to boot. &nbsp;I’m getting dumped to=
a dracut shell and getting the error dm-linear device lookup failed. &nbsp=
;In the dracut output with debug on, I see dracut scan my drives, and I see=
it find my 3 LVs, but it then tries to do something with them, I get the e=
rror, and it then fails out with root device not found and drops me into dr=
acut.<BR>
<BR>
Here’s the odd thing, booting off the rescue dvd my volumes are fine.=
&nbsp;The LVM can be mounted no problem.<BR>
<BR>
This makes me think that there’s something missing from the kernel or=
initrd. &nbsp;I can’t really figure out what though. &nbsp;I’v=
e gone through the output of lsmod when running from the rescue dvd. &nbsp;=
I’ve even build a few ramdisks including all the modules that I thoug=
ht might be related (dm, lvm, mdraid, dmraid, multipath). &nbsp;I tried bui=
lding them with mkinitrd —with=3Dmodule, and I tried again with dracu=
t —add=3Dmodules. &nbsp;No change in results.<BR>
<BR>
I’m not sure where to go from here. &nbsp;I feel like the system can =
be rescued, but I don’t know how to work backward through dracut to f=
ind out why it’s unable to find my root volume. &nbsp;Any help would =
be appreciated. &nbsp;Cross-posting to lvm.<BR>
<BR>
Thanks,<BR>
-Brian<BR>
</SPAN></FONT></BLOCKQUOTE>
</BODY>
</HTML>


--_000_CA30CF5D11CADbrianpstampernasagov_--


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Old 06-29-2011, 07:45 PM
Nils Kassube
 
Default Wireless on 10.10

Bob H. wrote:
> I have a Belkin G wireless router which barely works on any Linux I
> have, but works fine on my wife's XP. Before I start buying one each
> of every brand, has anyone found what works on Ubuntu? Thanx much;
> Bob H.

I have two routers: WRT54GL and TL-WR1043N. The former has the
disadvantage that it works only with up to 54 Mbit/s and the switch is
only 10/100 Mbit/s. The latter has a gigabit switch and wireless N
standard. Nowadays I wouldn't buy a G standard router. However don't
replace the original firmware of the TL-WR1043N. The openwrt firmware
sometimes forgets the connected clients. The original firmware didn't
have that problem.

OTOH, why do you think it is a problem of the router? I'd rather suppose
it is a problem of the wireless adapter of your Ubuntu machine. What
wireless card do you have in that machine? With a card that uses the
ath9k driver I have the same problem like the TL-WR1043N with openwrt
firmware (yes, that firmware uses the ath9k driver as well). But I don't
have a problem with the Intel ipw2200bg or an Atheros card which uses
the ath5k driver.


Nils

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From: "Stamper, Brian P. (ARC-D)[Stinger Ghaffarian Technologies Inc. (SGT
Inc.)]" <brian.p.stamper@nasa.gov>
To: device-mapper development <dm-devel@redhat.com>
Date: Wed, 29 Jun 2011 14:47:25 -0500
Thread-Topic: [dm-devel] Fedora 15 dm-linear device lookup failed
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I was able to boot this system by taking an initramfs from another Fedora 1=
5 test system and putting it in /boot and referencing it in grub.conf. How=
ever, I need to find out why an initramfs I build on the system is unable t=
o boot.

When I'm in dracut, I was able to do some checking. Using the lvm commands=
, I was able to activate and deactivate the vg, display the lvs, but not us=
e them. I would get "device not found", and in /dev/mapper, the lvm device=
s were not there. There were other lvm devices there, but not from my prim=
ary system lvm. The only thing that stands out about it is that it is ext4=
, not ext3.

Comparing the decompiled initrds, there's no modules that stand out. Sas.o=
ut is a listing of the WORKING initrd, tfs.out is the NOT WORKING initrd.

[root@testfs ramdisks]# diff sas.out tfs.out
718d717
< ./lib/firmware/ql2500_fw.bin
1248,1249d1246
< ./etc/ld.so.conf.d/openmotif-64.conf
< ./etc/ld.so.conf.d/kernel-2.6.38.7-30.fc15.x86_64.conf
1252c1249
< ./etc/ld.so.conf.d/kernel-2.6.34.8-68.fc13.x86_64.conf
---
> ./etc/ld.so.conf.d/qt-x86_64.conf
1262d1258
< ./etc/modprobe.d/openfwwf.conf
1278a1275
> ./etc/udev/rules.d/40-multipath.rules
1317a1315
> ./lib64/libcryptsetup.so.1.2.0
1322a1321
> ./lib64/libcap.so
1407d1405
< ./lib64/libcryptsetup.so.1.1.0
1419a1418
> ./lib64/libnss_files-2.12.2.so
1480a1480
> ./usr/bin/checkisomd5
1491d1490
< ./usr/lib64/libnss_files.so
1517a1517
> ./usr/share/plymouth/themes/default.plymouth

Nothing there looks relevant. Libcryptsetup needs updating on the test sys=
tem I pulled the initrd from. The q-logic firmware is irrelevant. There a=
re a couple of older kernels on the test system. Libcap.so is a dependency=
of legato backup software. Libnss_files should have nothing to do with ac=
cessing an LVM.

So I'm stuck. My system is up, but only if I build an initrd on another sy=
stem and copy it over, meaning next time I update the kernel it will not bo=
ot. Nothing's jumping out at me as obviously missing modules from the brok=
en initrd. Where else can I look?

-Brian




On 6/29/11 1:45 AM, "Brian Stamper" <brian.p.stamper@nasa.gov> wrote:

I just upgraded a Fedora system from 13 to 15, and now I can't get it to bo=
ot. I'm getting dumped to a dracut shell and getting the error dm-linear d=
evice lookup failed. In the dracut output with debug on, I see dracut scan=
my drives, and I see it find my 3 LVs, but it then tries to do something w=
ith them, I get the error, and it then fails out with root device not found=
and drops me into dracut.

Here's the odd thing, booting off the rescue dvd my volumes are fine. The =
LVM can be mounted no problem.

This makes me think that there's something missing from the kernel or initr=
d. I can't really figure out what though. I've gone through the output of=
lsmod when running from the rescue dvd. I've even build a few ramdisks in=
cluding all the modules that I thought might be related (dm, lvm, mdraid, d=
mraid, multipath). I tried building them with mkinitrd -with=3Dmodule, and=
I tried again with dracut -add=3Dmodules. No change in results.

I'm not sure where to go from here. I feel like the system can be rescued,=
but I don't know how to work backward through dracut to find out why it's =
unable to find my root volume. Any help would be appreciated. Cross-posti=
ng to lvm.

Thanks,
-Brian

--_000_CA30CF5D11CADbrianpstampernasagov_
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<HTML>
<HEAD>
<TITLE>Re: [dm-devel] Fedora 15 dm-linear device lookup failed</TITLE>
</HEAD>
<BODY>
<FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"><SPAN STYLE=3D'font-size:=
11pt'><BR>
I was able to boot this system by taking an initramfs from another Fedora 1=
5 test system and putting it in /boot and referencing it in grub.conf. &nbs=
p;However, I need to find out why an initramfs I build on the system is una=
ble to boot.<BR>
<BR>
When I’m in dracut, I was able to do some checking. &nbsp;Using the l=
vm commands, I was able to activate and deactivate the vg, display the lvs,=
but not use them. &nbsp;I would get “device not found”, and in=
/dev/mapper, the lvm devices were not there. &nbsp;There were other lvm de=
vices there, but not from my primary system lvm. &nbsp;The only thing that =
stands out about it is that it is ext4, not ext3.<BR>
<BR>
Comparing the decompiled initrds, there’s no modules that stand out. =
&nbsp;Sas.out is a listing of the WORKING initrd, tfs.out is the NOT WORKIN=
G initrd.<BR>
<BR>
[root@testfs ramdisks]# diff sas.out tfs.out <BR>
718d717<BR>
&lt; ./lib/firmware/ql2500_fw.bin<BR>
1248,1249d1246<BR>
&lt; ./etc/ld.so.conf.d/openmotif-64.conf<BR>
&lt; ./etc/ld.so.conf.d/kernel-2.6.38.7-30.fc15.x86_64.conf<BR>
1252c1249<BR>
&lt; ./etc/ld.so.conf.d/kernel-2.6.34.8-68.fc13.x86_64.conf<BR>
---<BR>
&gt; ./etc/ld.so.conf.d/qt-x86_64.conf<BR>
1262d1258<BR>
&lt; ./etc/modprobe.d/openfwwf.conf<BR>
1278a1275<BR>
&gt; ./etc/udev/rules.d/40-multipath.rules<BR>
1317a1315<BR>
&gt; ./lib64/libcryptsetup.so.1.2.0<BR>
1322a1321<BR>
&gt; ./lib64/libcap.so<BR>
1407d1405<BR>
&lt; ./lib64/libcryptsetup.so.1.1.0<BR>
1419a1418<BR>
&gt; ./lib64/libnss_files-2.12.2.so<BR>
1480a1480<BR>
&gt; ./usr/bin/checkisomd5<BR>
1491d1490<BR>
&lt; ./usr/lib64/libnss_files.so<BR>
1517a1517<BR>
&gt; ./usr/share/plymouth/themes/default.plymouth<BR>
<BR>
Nothing there looks relevant. &nbsp;Libcryptsetup needs updating on the tes=
t system I pulled the initrd from. &nbsp;The q-logic firmware is irrelevant=
. &nbsp;There are a couple of older kernels on the test system. &nbsp;Libca=
p.so is a dependency of legato backup software. &nbsp;Libnss_files should h=
ave nothing to do with accessing an LVM.<BR>
<BR>
So I’m stuck. &nbsp;My system is up, but only if I build an initrd on=
another system and copy it over, meaning next time I update the kernel it =
will not boot. &nbsp;Nothing’s jumping out at me as obviously missing=
modules from the broken initrd. &nbsp;Where else can I look?<BR>
<BR>
-Brian<BR>
<BR>
<BR>
<BR>
<BR>
On 6/29/11 1:45 AM, &quot;Brian Stamper&quot; &lt;<a href=3D"brian.p.stampe=
r@nasa.gov">brian.p.stamper@nasa.gov</a>&gt; wrote:<BR>
<BR>
</SPAN></FONT><BLOCKQUOTE><FONT FACE=3D"Calibri, Verdana, Helvetica, Arial"=
><SPAN STYLE=3D'font-size:11pt'>I just upgraded a Fedora system from 13 to =
15, and now I can’t get it to boot. &nbsp;I’m getting dumped to=
a dracut shell and getting the error dm-linear device lookup failed. &nbsp=
;In the dracut output with debug on, I see dracut scan my drives, and I see=
it find my 3 LVs, but it then tries to do something with them, I get the e=
rror, and it then fails out with root device not found and drops me into dr=
acut.<BR>
<BR>
Here’s the odd thing, booting off the rescue dvd my volumes are fine.=
&nbsp;The LVM can be mounted no problem.<BR>
<BR>
This makes me think that there’s something missing from the kernel or=
initrd. &nbsp;I can’t really figure out what though. &nbsp;I’v=
e gone through the output of lsmod when running from the rescue dvd. &nbsp;=
I’ve even build a few ramdisks including all the modules that I thoug=
ht might be related (dm, lvm, mdraid, dmraid, multipath). &nbsp;I tried bui=
lding them with mkinitrd —with=3Dmodule, and I tried again with dracu=
t —add=3Dmodules. &nbsp;No change in results.<BR>
<BR>
I’m not sure where to go from here. &nbsp;I feel like the system can =
be rescued, but I don’t know how to work backward through dracut to f=
ind out why it’s unable to find my root volume. &nbsp;Any help would =
be appreciated. &nbsp;Cross-posting to lvm.<BR>
<BR>
Thanks,<BR>
-Brian<BR>
</SPAN></FONT></BLOCKQUOTE>
</BODY>
</HTML>


--_000_CA30CF5D11CADbrianpstampernasagov_--


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Old 06-29-2011, 10:22 PM
"Clint Tinsley"
 
Default Wireless on 10.10

Bob H. wrote:
> I have a Belkin G wireless router which barely works on any Linux I
> have, but works fine on my wife's XP. Before I start buying one each
> of every brand, has anyone found what works on Ubuntu? Thanx much;
> Bob H.

OTOH, why do you think it is a problem of the router? I'd rather suppose
it is a problem of the wireless adapter of your Ubuntu machine. What
wireless card do you have in that machine? With a card that uses the
ath9k driver I have the same problem like the TL-WR1043N with openwrt
firmware (yes, that firmware uses the ath9k driver as well). But I don't
have a problem with the Intel ipw2200bg or an Atheros card which uses
the ath5k driver.

I would agree that it much more likely that it is a problem with the wireless adapter in your Ubuntu, especially since your Wife's XP computer is working fine with the wireless router. There are a lot of USB Wireless N adapters available now but in my work, I have found great variation even in those in terms of receiver sensitivity (ability to connect and keep the connection to the wireless router). And also beware of orientation of the wireless antenna(s) are important and should be realatively in the same plane (parallel) to the antenna on the wireless router.

Clint

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Old 06-30-2011, 03:06 AM
Md Ashickur Rahman Noor
 
Default Wireless on 10.10

I have use Belkin N150 N300 with out any problem in Lucid. What is your main problem in Router? First plug the rj45 in your LAN card, then try this command

ifconfig
You will see the ip address where the router has connected. Then use that ip to access in router configuration panel.

----------------------------------------------------------
Dedicated Linux Forum in Bangladesh
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Thank you
Md Ashickur Rahman





On Thu, Jun 30, 2011 at 12:40 AM, Bob H. <hickster711@gmail.com> wrote:


I have a Belkin G wireless router which barely works on any Linux I have, but works fine on my wife's XP. Before I start buying one each of every brand, has anyone found what works on Ubuntu? Thanx much; Bob H.

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Old 07-01-2011, 08:24 AM
Donald Talbert
 
Default Wireless on 10.10

On Wed, 2011-06-29 at 14:40 -0400, Bob H. wrote:
> I have a Belkin G wireless router which barely works on any Linux I
> have, but works fine on my wife's XP. Before I start buying one each
> of every brand, has anyone found what works on Ubuntu? Thanx much; Bob
> H.

I have a Belkin Wireless G usb adapter too. Just out of curiosity. When
you say "barley works", do you mean: low transfer speeds? Seems to
crash / drop connection? I am using a router similar to yours too,
Linksys E1000 which is very similar internally to the WRT one I think
you mentioned. It can even take the WRT custom firmware, thats how
similar it is.


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