Regressions when upgrading 7.2 -> 7.4, ATI Radeon 9250 PCI

Jeremy Henty onepoint at
Sun Apr 19 14:01:07 PDT 2009

On Sun, Apr 19, 2009 at 02:54:13PM -0400, Alex Deucher wrote:
> On Sun, Apr 19, 2009 at 2:33 PM, Jeremy Henty <onepoint at> wrote:
> >
> > On Sun, Apr 19, 2009 at 12:49:56PM -0400, Alex Deucher wrote:
> >
> >> Does your monitor  support 1600x1200?   We'd have to  add a quirk
> >> for your monitor if the 1600x1200 mode is indeed bogus.
> >
> > According  the  manual  it supports  1600x1200 at 80Hz,  but  I  have
> > never  pushed  it   that  far.    (I'm  squinting   enough  as  it
> >  is.  :-)  It's an Iiyama Vision Master 450.

OK, setting Modes to "1600x1200" does  not work - the screen blanks as
before.  I don't know if tweaking sync rates etc. might fix it, but as
it stands it does not work.  Latest conf and log attached.

> > Are  any  of  these  problems  to   do  with  my  card  not  being
> > recognised, or is that a separate issue?
> These  are all  related  to the  EDID  in your  monitor.  First  the
> 1600x1200 mode it  announces doesn't seem to work,  secondly, it has
> bogus size data:  54 x 3688 mm.  The bogus size  data is what causes
> the  DPI  to  be  calculated  incorrectly  which  causes  your  font
> problems.

OK, that's clear. Can the bogus size data be fixed with a quirk too?


Jeremy Henty

More information about the xorg mailing list