Disable CONFIG_STUB_POULSBO in favor of CONFIG_DRM_PSB
From: Leann Ogasawara <leann.ogasawara@canonical.com>
BugLink: http://bugs.launchpad.net/bugs/899244 There is a staging driver, psb_gfX (CONFIG_DRM_PSB), which supports Intel GMA500 cards. This driver has moved out of staging as of v3.3. We currently have this staging driver enabled. Unfortunately, this driver conflicts with the poulsbo driver (CONFIG_STUB_POULSBO). The poulsbo driver supports cards 8086:8108 and 8086:8109 both of which are also supported by the psb_gfx driver. It has been requested we disable the poulsbo driver in favor of the psb_gfx driver. Users owning 8086:8108 confirm they need to use the psb_gfx driver to have proper graphics support. If they try to use the poulsbo driver, X fails. I'd committed this change earlier in the cycle but there were concerns about completely disabling the pouslbo driver and an alternative solution of blacklisting the poulsbo driver in module-init-tools might be a better solution. However, having received confirmation from users that their devices are better supported by psb_gfx, it seems best to just disable the poulsbo driver rather than blacklist it in module-init-tools. I wanted to circulate this to the list to get feedback before applying. There is also an upstream bug to track the driver's conflicting: https://bugzilla.kernel.org/show_bug.cgi?id=42848 Thanks, Leann Leann Ogasawara (2): UBUNTU: [Config] Disable CONFIG_STUB_POULSBO UBUNTU: [Config] Add CONFIG_DRM_PSB check to enforcer debian.master/config/config.common.ubuntu | 2 +- debian.master/config/enforce | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletions(-) -- 1.7.9.1 -- kernel-team mailing list kernel-team@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kernel-team |
Disable CONFIG_STUB_POULSBO in favor of CONFIG_DRM_PSB
On 03/13/2012 03:15 PM, leann.ogasawara@canonical.com wrote:
From: Leann Ogasawara<leann.ogasawara@canonical.com> BugLink: http://bugs.launchpad.net/bugs/899244 There is a staging driver, psb_gfX (CONFIG_DRM_PSB), which supports Intel GMA500 cards. This driver has moved out of staging as of v3.3. We currently have this staging driver enabled. Unfortunately, this driver conflicts with the poulsbo driver (CONFIG_STUB_POULSBO). The poulsbo driver supports cards 8086:8108 and 8086:8109 both of which are also supported by the psb_gfx driver. It has been requested we disable the poulsbo driver in favor of the psb_gfx driver. Users owning 8086:8108 confirm they need to use the psb_gfx driver to have proper graphics support. If they try to use the poulsbo driver, X fails. I'd committed this change earlier in the cycle but there were concerns about completely disabling the pouslbo driver and an alternative solution of blacklisting the poulsbo driver in module-init-tools might be a better solution. However, having received confirmation from users that their devices are better supported by psb_gfx, it seems best to just disable the poulsbo driver rather than blacklist it in module-init-tools. I wanted to circulate this to the list to get feedback before applying. There is also an upstream bug to track the driver's conflicting: https://bugzilla.kernel.org/show_bug.cgi?id=42848 Thanks, Leann Leann Ogasawara (2): UBUNTU: [Config] Disable CONFIG_STUB_POULSBO UBUNTU: [Config] Add CONFIG_DRM_PSB check to enforcer debian.master/config/config.common.ubuntu | 2 +- debian.master/config/enforce | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletions(-) I'm exploring the possibility of backporting the 3.3-rc7 gma500. The OEM crew are gonna try the upstream kernel tomorrow (which has a key boot time fix). If that works, then it might make sense to pluck the 3.3 driver plus some DRM support cruft. rtg -- Tim Gardner tim.gardner@canonical.com -- kernel-team mailing list kernel-team@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kernel-team |
Disable CONFIG_STUB_POULSBO in favor of CONFIG_DRM_PSB
gma500 has nothing to do with the specific problem this addresses,
CONFIG_STUB_POULSBO enables the "poulsbo" module which is only a stub driver to give backlight support to actual poulsbo devices (aka only 8086:8109 and 8086:8108 devices). Loading this stub driver prevents psb_gfx (aka the gma500 video driver) from working on these old poulsbo devices to give 2D native resolution support. -- kernel-team mailing list kernel-team@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kernel-team |
Disable CONFIG_STUB_POULSBO in favor of CONFIG_DRM_PSB
On 03/13/2012 06:50 PM, Robert Hooker wrote:
gma500 has nothing to do with the specific problem this addresses, CONFIG_STUB_POULSBO enables the "poulsbo" module which is only a stub driver to give backlight support to actual poulsbo devices (aka only 8086:8109 and 8086:8108 devices). Loading this stub driver prevents psb_gfx (aka the gma500 video driver) from working on these old poulsbo devices to give 2D native resolution support. Indeed, you are correct. I was thinking CONFIG_STUB_POULSBO enabled the staging driver. rtg -- Tim Gardner tim.gardner@canonical.com -- kernel-team mailing list kernel-team@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kernel-team |
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