| Summary: | [965GM] mesa-7.1 + server-1.5.0 + kernel 2.6.23.17 and it's drm modules cause stripey display corruption | ||
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| Product: | Mesa | Reporter: | Jens Stroebel <dr-xorg> |
| Component: | Drivers/DRI/i965 | Assignee: | Gordon Jin <gordon.jin> |
| Status: | RESOLVED DUPLICATE | QA Contact: | |
| Severity: | normal | ||
| Priority: | medium | Keywords: | NEEDINFO |
| Version: | 7.1 | ||
| Hardware: | x86 (IA32) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: |
snapshot of running glxgears
Xorg log for configuration which shows the described behaviour drirc which disables vblank-sync for 965_dri driver |
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Created attachment 18690 [details]
Xorg log for configuration which shows the described behaviour
when replacing kernel 2.6.23.17 and it's drm-modules with the drmnext-kernel pulled from the git repo at git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6.git , the display corruption does not occur. glxgears is then at ~60FPS, though. Since it's working fine with drm-next, I guess this can be marked as fixed? Or could you confirm if the latest stable kernel like 2.6.26 or 2.6.27-rcX also works fine? (In reply to comment #3) > Since it's working fine with drm-next, I guess this can be marked as fixed? > Or could you confirm if the latest stable kernel like 2.6.26 or 2.6.27-rcX also > works fine? > Weeeeelllllll, as I said, the glxgears' FPS are at ~60FPS, dropping to around 15FPS when opening another GL/GLX application. I wouldn't call that "fine"; but with kernel 2.6.26.3 (and it's included drm-modules), there is no display corruption like there was with 2.6.23.17 and it's drm-modules. So it is kind of "already fixed", yes. (In reply to comment #4) > So it is kind of "already fixed", yes. https://bugs.freedesktop.org/show_bug.cgi?id=17491 seems to indicate that there is still some problem, though... As explained in http://bugs.freedesktop.org/show_bug.cgi?id=17491#c6, 60fps is expected with default vblank-sync. Is the speed up and glxgears running "fine" if you disable vblank-sync? (In reply to comment #6) > As explained in http://bugs.freedesktop.org/show_bug.cgi?id=17491#c6, 60fps is > expected with default vblank-sync. > Is the speed up and glxgears running "fine" if you disable vblank-sync? yes, with disabled vblank-sync, the speed is up to ~530FPS and the display corruption does not appear, not even with 2.6.23.17 and it's kernel modules. Created attachment 18785 [details]
drirc which disables vblank-sync for 965_dri driver
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Created attachment 18689 [details] snapshot of running glxgears Setup: 965GM in Dell latitude D830 kernel 2.6.23.17 and drm-modules included therein libdrm-2.3.1 xorg-libs from master (2008-09-04) xorg-server 1.5.0 xf86-video-intel driver 2.4.2