Comment 49 for bug 107320

The fix for 151311 is to add quirks to xorg-server for each of the problematic monitors. These quirks are very hardware-specific by design (they apply to a particular vendor and product ID). This information is reported in the Xorg.0.log file. Quirks for several monitors were added in the fix for 151311, but it's likely this misses monitors from a lot of other people. In particular, this does not cover:

Matt:

(II) fglrx(0): Manufacturer: DMI Model: 0 Serial#: 66
(II) fglrx(0): Max H-Image Size [cm]: horiz.: 4 vert.: 3
(II) fglrx(0): clock: 108.0 MHz Image Size: 4 x 3 mm

4, 3 sounds like aspect ratio data.

Etienne:

(II) RADEON(0): Manufacturer: TRL Model: 610 Serial#: 5989
(II) RADEON(0): Max H-Image Size [cm]: horiz.: 32 vert.: 24
(II) RADEON(0): clock: 107.0 MHz Image Size: 4 x 3 mm
(II) RADEON(0): clock: 25.3 MHz Image Size: 4 x 3 mm

I don't know that we have a quirk available for these two cases, though.
Maybe these should be forwarded upstream.