[Bug 42373] Radeon HD 6450 (NI CAICOS) screen corruption on boot

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=42373

Kunal <kunal.gangakhedkar at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|DUPLICATE                   |

--- Comment #4 from Kunal <kunal.gangakhedkar at gmail.com> 2011-11-06 01:59:44 PST ---
(In reply to comment #3)
> Should be fixed with this patch:
> http://cgit.freedesktop.org/~airlied/linux/commit/?h=drm-fixes&id=12d5180bd7e683a4ae80830b82ba67e7b7fac7b2
> 
> *** This bug has been marked as a duplicate of bug 40103 ***

No, it doesn't solve the screen corruption at both boot time as well as while
starting Xorg.

I installed new kernel from Ubuntu's builds - so now I'm running 3.1.0-2.3 -
the current HEAD of
http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-precise.git;a=summary

This is rebased to v3.1 from Linus' tree.

The ubuntu-precise tree already has the commit you mentioned:
http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-precise.git;a=commit;h=12d5180bd7e683a4ae80830b82ba67e7b7fac7b2

The severity of lockups seems to have reduced - however, I haven't tested it
thoroughly yet. It still locked up while starting Xorg/KDM, but I could at
least switch to tty1 and stop KDM. I started KDM after a while and it started
properly. Also, dmesg didn't show any more "GPU lockup" messages after KDM
started properly.

Is it possible to load radeon.ko with some debug setting enabled? so that it
can dump more verbose messages - if that helps you.
"modinfo radeon" doesn't show any "debug..." parameter that can be used.

Not uploading new screenshots since there are no changes - (b) and (d) from
earlier screenshots is what I got when booting into the new kernel.

Attaching the new dmesg after this comment.

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.