| Summary: | [arrandale] [eDP] HP 8440p display non-functional with 2.6.37. | ||||||||||||||||||||
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| Product: | DRI | Reporter: | Zephaniah E. Hull <warp-spam+fdo> | ||||||||||||||||||
| Component: | DRM/Intel | Assignee: | Jesse Barnes <jbarnes> | ||||||||||||||||||
| Status: | CLOSED FIXED | QA Contact: | |||||||||||||||||||
| Severity: | normal | ||||||||||||||||||||
| Priority: | medium | CC: | jbarnes | ||||||||||||||||||
| Version: | unspecified | ||||||||||||||||||||
| Hardware: | Other | ||||||||||||||||||||
| OS: | All | ||||||||||||||||||||
| Whiteboard: | |||||||||||||||||||||
| i915 platform: | i915 features: | ||||||||||||||||||||
| Attachments: |
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Created attachment 41757 [details]
.config from non-working 2.6.37
Created attachment 41758 [details]
dmesg from non-working 2.6.37
As a note, this is with KMS, and it goes bad during the initramfs stage, X is not involved. (And getting to X doesn't solve the problem.)
Created attachment 41759 [details]
dmesg from working 2.6.36.2
Can you please add drm.debug=0xe to your boot line and attach the working/non-working dmesg? And an Xorg.0.log and possibly an intel_reg_dumper for both states. Created attachment 41886 [details]
Debug dmesg from 2.6.37, non-working.
Created attachment 41887 [details]
Debug dmesg from 2.6.36.2, working
Created attachment 41888 [details]
Non-working Xorg log from 2.6.37
Created attachment 41889 [details]
Working Xorg log from 2.6.36.2
I'll have to grab the intel_reg_dumper output another time, but here is all the logs. Can you try drm-intel-staging from git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel.git? I can confirm that drm-intel-staging as of commit 2cfad3600e192f867c0e03905c90903f189c010a has the problem fixed. If there is a specific patch that you'd like me to try against 2.6.37 I'd be happy to. (As it is definitely desired for 2.6.37.1) I believe it is most likely: commit 858bc21f0637c407601a05626854ae58b242f75d Author: Jesse Barnes <jbarnes@virtuousgeek.org> Date: Tue Jan 4 10:46:49 2011 -0800 drm/i915: check eDP encoder correctly when setting modes We were using a stale pointer in the check which caused us to use CPU attached DP params when we should have been using PCH attached params. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31988 Tested-by: Jan-Hendrik Zab <jan@jhz.name> Tested-by: Christoph Lukas <christoph.lukas@gmx.net> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org which is already upstream, and one of the few patches in 2.6.37+ that would affect this. So if the current tip of linus (or drm-intel-fixes) works, then yes we have the right patch heading for 2.6.37.1. Optimistically closing. Should be fixed by one of the eDP related changes now upstream. |
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Created attachment 41756 [details] .config for working 2.6.36.2. Works on 2.6.36.2, on 2.6.37 the external DVI works, but the on board display is non-functional. (I'd say LVDS, but I am actually unsure of that.) 2.6.37 dmesg, along with 2.6.36.2 and 2.6.37 .config files attached.