[Bug 21542] Radeon: No 50Hz (PAL) modes available after upgrading to 2.6.36

Piotr Gluszenia Slawinski curious at bwv190.internetdsl.tpnet.pl
Sun Feb 6 15:41:16 PST 2011

> I finally did the bisect and got this as a result after a lot of rebooting:
> "
> 139315796778a6d5f67c644e2ff470ddc69efb7b is the first bad commit
> commit 139315796778a6d5f67c644e2ff470ddc69efb7b
> Author: Adam Jackson <ajax at redhat.com>
> Date:   Tue Aug 3 14:38:19 2010 -0400


> Maybe this should be changed to Video(Other) as this probably applies to all
> graphic cards?
> Do you need the bisect log?

thanx. some time ago i've also noticed i can't set up 50hz modes
on various hw. while previously i could, so i can confirm it affects
other hw.

50hz modes are esp. usefull on analog LCD screens (slows down pixel
clock, so improves sharpness)  , slow hw (bit less stress on VRAM),
  and when using programs like vice , fuse, or other sw. emulating PAL 
computer with exact refresh rate (i do not know why, but they work much 
slower and stutter - probably because vblank signal is firing too often,
trigering update which could be deferred a bit more).


The modern datacenter depends on network connectivity to access resources
and provide services. The best practices for maximizing a physical server's
connectivity to a physical network are well understood - see how these
rules translate into the virtual world? 
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