Created attachment 398887 [details]
Photo of my VGA monitor with unstable image
Description of problem:
I just did the F12 yum updates and rebooted. On reboot my external VGA monitor is all wavey. See attachment for photo.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
2. Enable VGA monitor
VGA monitor image is all wavey.
This is a regression and worked fine before the yum updates. I was running xorg-x11-drv-ati-6.13.0-0.20.20091221git4b05c47ac.fc12.x86_64
Created attachment 398888 [details]
I just tried with Fedora 13 alpha and it too has the same problem.
Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue.
Please attach output of the dmesg command, system log (/var/log/messages) to the bug report as individual uncompressed file attachments using the bugzilla file attachment link above.
We will review this issue again once you've had a chance to attach this information.
Thanks in advance.
Created attachment 399412 [details]
dmesg from fedora 12 with latest updates
Created attachment 399435 [details]
dmesg from F13 latest nightly
Fedora 13 running lastest nightly compose, desktop-x86_64-20100310.20.iso. Plus I did a yum update on the xorg-x11-drv-ati. So I'm running:
I have exactly the same problem. After latest yum update vga-0 lcd monitor displays wavy distortions. The distortions are more pronounced as the screen resolutions decrease.
Created attachment 401949 [details]
dmesg fromHP Compac nc6400 Radeon X1300
Created attachment 401951 [details]
Xorg.0 from HP compac nc6400 Radeon x1300
I have this too on the Compaq nc6400. For what it's worth, this bug is also in Ubuntu Lucid: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/539350
This bug also applies to the HP nx9420
Also, what's the deal with the fc14/fc13 stuff...some packages seem go one way and others the other...
Note the problem goes away when you use this, 188.8.131.52-174.2.22.fc12.i686, Kernel.
I saw the same problem during the Radeon Test Day on my laptop with RS690M.
I bisected it to:
drm/radeon/kms/atom: add support for spread spectrum (v2)
This commit itself was not testable, so I had to apply this patch too:
drm/radeon/kms/atom: fix potential oops in spread spectrum code
Then I found the bug is already fixed in 2.6.34-rc4 by commit:
drm/radeon/kms: further spread spectrum fixes
So, when does 2.6.34 get released to the consumers?
(In reply to comment #13)
> So, when does 2.6.34 get released to the consumers?
Not in Fedora 13.
(In reply to comment #14)
> Not in Fedora 13.
Any chance of this being backported to a F13 kernel?
Created attachment 407745 [details]
quick hack to disable spread spectrum
For now I'm using the attached simple patch which just disables spread spectrum. Here's a scratch kernel build (F-13, x86_64):
Dave Airlie backported the proper fix to F-13.
drm-radeon-ss-fix.patch is now in kernel-184.108.40.206-57.fc13:
I have tested the x86_64 build on my RS690M and it works fine.
kernel-220.127.116.11-57.fc13 has been submitted as an update for Fedora 13.
kernel-18.104.22.168-57.fc13 has been pushed to the Fedora 13 testing repository. If problems still persist, please make note of it in this bug report.
If you want to test the update, you can install it with
su -c 'yum --enablerepo=updates-testing update kernel'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/kernel-22.214.171.124-57.fc13
kernel-126.96.36.199-57.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.
Sorry to bring the thread back to life but, is there a fix for this bug in FC12 or is the fix only available for FC13?