Comment 55 for bug 539163

Just to confirm (unless my hardware is a corner case), this bug seems fixed in freedesktop (freedesktop.org bugzilla #22576); will it be incorporated in ubuntu, ideally 13.04?

My hardware seems close the original posters' -- "legacy radeon" -- I'm using r300 but they seem to be on r200, but the symptoms I was experiencing match (dark zoom), and the "workaround" is effective.

I have an HP Pavilion zv6130us laptop with:

01:05.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Radeon XPRESS 200M 5955 (PCIE) (prog-if 00 [VGA controller])

.. driven as r300 as shown in Xorg log:

[ 35.943] (II) RADEON(0): [DRI2] DRI driver: r300
[ 35.943] (II) RADEON(0): [DRI2] VDPAU driver: r300
[ 35.943] (II) RADEON(0): Front buffer size: 3072K
[ 35.943] (II) RADEON(0): VRAM usage limit set to 111369K
[ 35.943] (==) RADEON(0): Backing store disabled
[ 35.943] (II) RADEON(0): Direct rendering enabled
[ 35.943] (II) RADEON(0): Render acceleration enabled for R300/R400/R500 type cards.

kms / kernel modesetting is on.

To update, on my ubuntu 12.10 "GNOME Classic" system, the workaround in compizconfig-settings-manager (a.k.a. ccsm a.k.a (in a GNOME Classic X login session after gnome-session-fallback is installed) Applications/System Tools/Preferences/CompizConfig Settings Manager) is:

category -> general -> opengl -> lighting (uncheck)

Bug-tracking note:

This bug was marked invalid when linked to freedesktop bug 25883, presumably because that was a resolved duplicate of the resolved fixed freedesktop bug 22576. I accept that this freedesktop-assigned "xserver-xorg-driver-ati" bug is invalid. Nothing has been posted after that in the last few months. But I would point out that the "xserver-xorg-video-ati (Ubuntu)" bug is still valid. Has the fix been implemented in Ubuntu? If so, is my setup showing that it is incomplete?

Misleading link, perhaps auto-generated:

In comment #54 of this bug, it is marked as a duplicate of "bug 22576". This makes sense as a freedesktop bug at https://bugs.freedesktop.org/show_bug.cgi?id=22576, but the link is wrongly set to an unrelated launchpad bug at https://bugs.launchpad.net/bugs/22576.

I am willing to do testing.