Bug 13391
| Summary: | Kernel boot hangs at about every second start when kms is activated | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Martin Bammer (mrb74) |
| Component: | Video(DRI - Intel) | Assignee: | drivers_video-dri-intel (drivers_video-dri-intel) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | normal | CC: | bgamari, eric, gordon.jin, jbarnes, rjw |
| Priority: | P2 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.30-rc7 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
Crashed boot process with activated kms
Successful boot with kms kernel configuration kernel configuration of 2.6.30-rc5 |
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Created attachment 21572 [details]
Successful boot with kms
Created attachment 21573 [details]
kernel configuration
Created attachment 21574 [details]
kernel configuration of 2.6.30-rc5
Could you git bisect the issue? I tried to bisect the issue. But unfortunately it fails, because of a reiserfs bug after rc5 which causes the kernel crashing when it mounts the root fs. But I've found the reason for this issue. I remembered that I compiled rc5 with a slightly different config than rc6. In rc6 I had enabled more debugging options and also the kdbg. Looking at the kernel messages when it stopped booting I saw that the last outputs always came from kdbg. Then I disabled kdbg and the additional debugging options in the current master. Now the issue seems to be gone. I've bootet the kernel several times without any problems. Btw. I compiled rc5 with the same options as rc6 and rc7 and it showed the same issues. Notify-Also : Eric Anholt <eric@anholt.net> Sounds like a kgdb issue then... On Sunday 07 June 2009, Martin Bammer wrote:
> Since i disabled most of the debug options this problem has gone. IMHO
> this issue has been caused by kdbg.
Dropping from the list of recent regressions as per comments #8 and #9. So can we close this one? Yes this bug can be closed. |
Created attachment 21571 [details] Crashed boot process with activated kms Since kernel 2.6.30-rc6 the boot process hangs when kms is activated. Kernel 2.6.30-rc5 never had problems with activated kms. Magic key sequence is not working. Only pressing the power button for 4 seconds or removing the power work.