| Priority | medium |
|---|---|
| Bug ID | 55692 |
| Assignee | dri-devel@lists.freedesktop.org |
| Summary | [KMS][Cayman] Garbled screen and oops with 6950 with linus git from 20121006 (3.7-rc0) |
| Severity | normal |
| Classification | Unclassified |
| OS | Linux (All) |
| Reporter | serkan@hosca.com |
| Hardware | x86-64 (AMD64) |
| Status | NEW |
| Version | unspecified |
| Component | DRM/Radeon |
| Product | DRI |
I boot up freshly compiled linus git from 20121006, gdm starts but its all black screen after a couple of seconds its all garbage. I vt switch to 1 and try restarting gdm and i get the oops. xf86-video-ati git from 20121004 mesa git from 20121004 Using arch with 3.6 works fine
Created attachment 68154 [details]
dmesg.3.7.0-rc0 with irqpoll
Created attachment 68156 [details]
Xorg.0.log with 3.7-rc0
Here it is: 2a6f1abbb48f1d90f20b8198c4894c0469468405 is the first bad commit commit 2a6f1abbb48f1d90f20b8198c4894c0469468405 Author: Christian K=C3=B6nig <deathsimple@vodafone.de> Date: Sat Aug 11 15:00:30 2012 +0200 drm/radeon: make page table updates async v2 Currently doing the update with the CP. v2: Rebased on Jeromes bugfix. Make validity comparison more human readable. Signed-off-by: Christian K=C3=B6nig <deathsimple@vodafone.de> :040000 040000 3ed3f64bd42f5f1000ab9e957df08f53e81e09d9 c5143cbc30add8e3472366fbdb84756d9cdcd035 M drivers
| What | Removed | Added |
|---|---|---|
| Status | NEW | ASSIGNED |
Mhm, interesting. You get a GPU lockup, but not a pagefault. Need to look deeper into it, but this looks rather strange to me.
Created attachment 68515 [d=
etails]
Possible fix.
Could you try the attached patch ontop of Alex latest drm-nex-3.7 branch
(git://people.freedesktop.org/~agd5f/linux) ?
I'm not 100% sure that it's this problem, but it might be it.
Thanks,
Christian.
| What | Removed | Added |
|---|---|---|
| Attachment #68515 is obsolete | 1 |
Created at=
tachment 68516 [details]
Possible fix rebased on correct branch.
(In reply to comment #12) > Yes the patch works. I'm sorry o spoke to soon, same problem
Created attachment 68519 [details]
dmesg linus git with patch
I've tried the patch on git://people.freedesktop.org/~agd5f/linux drm-nex-3.7 branch and it doesn't work. The gdm sets the blue background image and freezes, no top bar or login dialog. I ssh from another computer and dmesg is clean at this point. I try to stop gdm and it displays some garbage, mostly black screen with some vertical purple bars about 4 cm thick and about 2 cm from the top of the screen, then it displays the gpu crash messages on log and then the console comes back.
Created attachment 68531 [details]
dmesg with alex's drm-next-3.7 branch with patch
It works with linus git without the patch with arch packages for mesa 9.0-1 and -ati 6.14.6-2. I tried with -ati git and mesa 9 and it worked. Then i tried with mesa git and it failed. I started to bisect mesa but i got the following: $ git bisect bad Bisecting: a merge base must be tested [2d2f1fd164218eacf2b142bc808be1f25f66e72c] docs: Add some missing features to 9.0 release notes and GL3.txt $ git bisect bad The merge base 2d2f1fd164218eacf2b142bc808be1f25f66e72c is bad. This means the bug has been fixed between 2d2f1fd164218eacf2b142bc808be1f25f66e72c and [e5fdeef1e08b55acd48dc68f0cc8fe213f2820b8]. So i did a git log --graph --oneline --all and started to git checkout between those two commits, starting from 2d2f1fd to de92b7a are bad and with commit "ef557ea winsys/radeon: disable virtual memory on Cayman" it started working.
Is VM enabled or disabled on your system? I'm experiencing a similar bug with kernel 3.7-rc1, but it is working fine with 3.6. VM is enabled on my system, I'll try to disable it when I'll get home to see if that helps and I'll also try to bisect the kernel commit that screwed things for me.
(In reply to comment #18) > Is VM enabled or disabled on your system? I'm experiencing a similar bug > with kernel 3.7-rc1, but it is working fine with 3.6. VM is enabled on my > system, I'll try to disable it when I'll get home to see if that helps and > I'll also try to bisect the kernel commit that screwed things for me. I don't know, how can i check?
mesa-git is working fine on linux 3.6 and mesa-git dont have the "ef557ea winsys/radeon: disable virtual memory on Cayman" commit
(In reply to comment #19) > (In reply to comment #18) > > Is VM enabled or disabled on your system? I'm experiencing a similar bug > > with kernel 3.7-rc1, but it is working fine with 3.6. VM is enabled on my > > system, I'll try to disable it when I'll get home to see if that helps and > > I'll also try to bisect the kernel commit that screwed things for me. > > I don't know, how can i check? Use "setenv" in a terminal and look for "RADEON_VA".
(In reply to comment #21) > (In reply to comment #19) > > (In reply to comment #18) > > > Is VM enabled or disabled on your system? I'm experiencing a similar bug > > > with kernel 3.7-rc1, but it is working fine with 3.6. VM is enabled on my > > > system, I'll try to disable it when I'll get home to see if that helps and > > > I'll also try to bisect the kernel commit that screwed things for me. > > > > I don't know, how can i check? > > Use "setenv" in a terminal and look for "RADEON_VA". Oh, i have nothing like that in env
Created attachment 68623 [det= ails] [review] Test patch. VM is definitely enabled, otherwise you won't got that error in the first place. Ok let's try to narrow down that bug a bit more, please apply the attached = test patch and see what happens. If the GPU hang vanished we indeed have a syncing issue, but not the PFP sy= nc.