reopen 603469
submitter 603469 !
retitle 603469 radeon: atombios stuck executing F6D8 (screen randomly goes 
black with no way to get it back)
quit

Hi again,

lauren wrote:

> no problem and thanks for following up

On second thought, I'm reopening this as an excuse to consider drm
patches for backporting.  I've set myself as submitter so hopefully
you won't get any spam from it after this message.

While I have your attention, could you help with one puzzle?  The X
log from the initial report contains:

| Current Operating System: Linux BUZZ 2.6.32-5-686 #1 SMP Sat Oct 30 22:47:19 
UTC 2010 i686

Which sounds like 2.6.32-27.  But dmesg contains:

| [    7.120450] [drm] Initialized radeon 2.0.0 20080528 for 0000:01:00.0 on 
minor 0
| [  949.420558] [drm:atom_op_jump] *ERROR* atombios stuck in loop for more 
than 1sec aborting
| [  949.420570] [drm:atom_execute_table_locked] *ERROR* atombios stuck 
executing F6D8 (len 487, WS 0, PS 4) @ 0xF719

This doesn't look like the standard squeeze kernel, since squeeze
doesn't contain v2.6.34-rc4~12^2~50^2~17 (drm/radeon/kms: catch
atombios infinite loop and break out of it, 2010-03-02).  It can't be
a mainline kernel, since the just-mentioned infinite loop checker was
not introduced until after a radeon ABI bump (2.1.0).  What did I
miss?

Puzzled,
Jonathan

(That mystery aside, here are some bugfix patches to consider
backporting.

 - v2.6.34-rc4~12^2~50^2~17 (drm/radeon/kms: catch atombios infinite
   loop and break out of it, 2010-03-02)

 - v2.6.36-rc3~9^2~79^2~24 (drm/radeon/kms/atom: bump atom loop
   timeout from 1 sec to 5 secs, 2010-06-30)

 - v2.6.37-rc8~26^2~2 (drm/radeon/kms: reorder display resume to avoid
   problems, 2010-12-20): "This fixes the infamous atombios timeouts
   on resume.")



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