| Summary: | rs480 Flickers when entering KMS on Dell Inspiron 1501 | ||
|---|---|---|---|
| Product: | xorg | Reporter: | Elton Carvalho <eltonfc> |
| Component: | Driver/Radeon | Assignee: | xf86-video-ati maintainers <xorg-driver-ati> |
| Status: | RESOLVED INVALID | QA Contact: | Xorg Project Team <xorg-team> |
| Severity: | normal | ||
| Priority: | medium | ||
| Version: | 7.4 (2008.09) | ||
| Hardware: | x86-64 (AMD64) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: | |||
Created attachment 33960 [details] [review] possible fix Does this patch help? (In reply to comment #1) > Created an attachment (id=33960) [details] > possible fix > > Does this patch help? > I'll check it this weekend, when I'll be able to afford putting my notebook offline. Thanks for the prompt response! (In reply to comment #1) > Created an attachment (id=33960) [details] > possible fix > > Does this patch help? > It seems to be working for now. Thanks. I've sent the patch to Dave. After a few reboots in different conditions, the bug doesn't seem to be happening anymore. Thanks! Created attachment 35804 [details]
DMESG from flickering boot
After a few boots, the bug is back. In fact, KMS worked fine for a few boots after applying the patch, then I got the flickering again. Before reopening this bug, I updated my kernel to 2.6.24 (which has the proposed patch applied) and the flickering on boot persists. A few things I noticed: When I updated the kernel and forgot to recompile the X11 radeon driver against the new kernel, I got the flickering on the terminal, but not on X (of course, compiz showed me that white screen, but gdm worked fine). I could alternate between the VTs and X, seeing flickering screen on the VTs and an OK working GDM. After compiling X11 radeon drivers (from git-master), I get flickering all the time, until X blanks the screen for powersaving. When I bring it back, everything works fine: KMS, VT and X, and switching between then. And I get no more flickering until a reboot. I attached a DMESG and a Xorg.0.log from a flickering boot (and subsequent X blanking and bringing back). Created attachment 35805 [details]
Xorg.0.log of a flickering X start, screen blanking and fine returning
Created attachment 35871 [details] [review] possible fix Does this patch help? (In reply to comment #9) > Created an attachment (id=35871) [details] > possible fix > > Does this patch help? Curiously, it worked on the first couple of warm reboots, but after leaving the computer unplugged from AC and off the battery for a few minutes, I got the flickering screen again, same behavior. No visible changes in the logs. (dmesg or /var/log/messages). Created attachment 35873 [details] [review] possible fix Does this patch help? try with and without the previous patch. (In reply to comment #11) > Created an attachment (id=35873) [details] > possible fix > > Does this patch help? try with and without the previous patch. Apparently not. Neither with nor without the previous patch. Always the flickering lines. Created attachment 35891 [details]
Output of "radeontool regmatch '*' while screen is flickering
Created attachment 35892 [details]
Output of "radeontool regmatch '*'" after DPMS-off
I took these data after the screen went DPMS off, and back on normally in console. X was *not* running at the time.
Created attachment 35893 [details]
Output of "radeontool regmatch '*'" after DPMS-off running X
Output of radeontool when running X without rebooting the computer after the previous registers.
Mass closure: This bug has been untouched for more than six years, and is not obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases. |
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Created attachment 33934 [details] Possibly relevant section of /var/log/messages During boot time, when the kernel loads KMS and tries to switch to the native resolution, *sometimes* the screen starts flickering, filles with horizontal alternating black and white stripes, about 2 pixels high. After a few minutes, it goes blank (DPMS/screensaver like) and when I move the mouse or hit the keyboard, The screen comes back normally, working fine.