Summary: | [855GM 2.2.0.90] regression: screen flickering in green | ||||||||
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Product: | xorg | Reporter: | Jos van Wolput <wolput> | ||||||
Component: | Driver/intel | Assignee: | Wang Zhenyu <zhenyu.z.wang> | ||||||
Status: | RESOLVED FIXED | QA Contact: | Xorg Project Team <xorg-team> | ||||||
Severity: | normal | ||||||||
Priority: | medium | CC: | hong.liu, jbarnes | ||||||
Version: | 7.3 (2007.09) | Keywords: | regression | ||||||
Hardware: | x86 (IA32) | ||||||||
OS: | Linux (All) | ||||||||
URL: | http://homepages.onsneteindhoven.nl/~wolput | ||||||||
Whiteboard: | |||||||||
i915 platform: | i915 features: | ||||||||
Bug Depends on: | |||||||||
Bug Blocks: | 13493 | ||||||||
Attachments: |
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Created attachment 14229 [details]
xorg.0.log
Could you help to git bisect which commit could cause the problem you see? bugzilla-daemon@freedesktop.org wrote: > > --- Comment #2 from Wang Zhenyu <zhenyu.z.wang@intel.com> 2008-02-11 07:01:18 PST --- > Could you help to git bisect which commit could cause the problem you see? > > Sure I want to help but I don't understand "bisect", how to "git bisect"? I am a physicist, not a programmer! Jos v.W. bugzilla-daemon@freedesktop.org wrote: > --- Comment #2 from Wang Zhenyu <zhenyu.z.wang@intel.com> 2008-02-11 07:01:18 PST --- > Could you help to git bisect which commit could cause the problem you see? > I got git-clone git://anongit.freedesktop.org/git/xorg/driver/xf86-video-intel but that's the version that gives some flickering. Please tell me which versions to git bisect and how to proceed, I never have used git bisect! 祝你新年快乐! Jos v.W. (In reply to comment #4) > 祝你新年快乐! Thank you! You too! ;) Here's the doc for git-bisect: http://www.kernel.org/pub/software/scm/git/docs/git-bisect.html If you failed to successfully bisect it, I'll try to reproduce it on the 855gm in my office later. bugzilla-daemon@freedesktop.org wrote: > http://bugs.freedesktop.org/show_bug.cgi?id=14437 > If you failed to successfully bisect it, I'll try to reproduce it on the 855gm > in my office later. > > Here is the result of bisect: --- jos@jewel:~/xf86-video-intel$ git bisect start -- arch/i386 jos@jewel:~/xf86-video-intel$ git bisect bad xf86-video-intel-2.2.0.90 jos@jewel:~/xf86-video-intel$ git bisect good xf86-video-intel-2.2.0 Bisecting: -1 revisions left to test after this [4a2b0f340357c4ca58dc9586fad1337b83966362] Fix typo in 1920x1080 resolution entry --- The green flickering appears especially in the right part of the screen when viewing pictures. It is reproducible whenever I install v. 2.2.0.90 and doesn't occur with v.2.2.0 (In reply to comment #6) > jos@jewel:~/xf86-video-intel$ git bisect start -- arch/i386 oh, that git-bisect manual page's example is for linux kernel, as arch/i386 (which is gone) used for. For intel video driver, no dir should be needed. > jos@jewel:~/xf86-video-intel$ git bisect bad xf86-video-intel-2.2.0.90 > jos@jewel:~/xf86-video-intel$ git bisect good xf86-video-intel-2.2.0 > Bisecting: -1 revisions left to test after this > [4a2b0f340357c4ca58dc9586fad1337b83966362] Fix typo in 1920x1080 resolution > entry This commit seems just following 2.2.0 version dump, and shouldn't affect your problem... bugzilla-daemon@freedesktop.org wrote: > http://bugs.freedesktop.org/show_bug.cgi?id=14437 > --- Comment #7 from Wang Zhenyu <zhenyu.z.wang@intel.com> 2008-02-17 06:41:48 PST --- > (In reply to comment #6) > I have found that the flickering originates from xf86-video-intel-2.2.0.90/src/i830_display.c. When replacing (around line 1727) if ((INREG(LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP) clock.p2 = I8XX_P2_LVDS_SLOW; else clock.p2 = I8XX_P2_LVDS_FAST; by clock.p2 = 14; as in the previous version 2.2.0, the flickering no longer occurs. There must be a reason why this was changed, but it obviously causes a regression! oh, thanks. Add Hong to cc. oops, my change to Hong's patch got reverse effect...fix patch is pushed to master. bugzilla-daemon@freedesktop.org wrote: > http://bugs.freedesktop.org/show_bug.cgi?id=14437 > > > > > > --- Comment #10 from Wang Zhenyu <zhenyu.z.wang@intel.com> 2008-02-18 16:55:10 PST --- > oops, my change to Hong's patch got reverse effect...fix patch is pushed to > master. > > I got your last commit, no more flickering! :) |
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Created attachment 14228 [details] xorg.conf Package: xserver-xorg-video-intel Version: 2:2.2.0.90-3 (Debian Sid) kernel: 2.6.24-1-686 Chip: Intel Corporation 82852/855GM Integrated Graphics Device I sporadically get some green flickering after upgrading to version 2.2.0.90-3 Seems to be a regression since there is no flickering when using xserver-xorg-video-intel_2.2.0-1+exa_i386.deb or xserver-xorg-video-intel_2.2.0+git20080107-1_i386.deb Regards, Jos van Wolput