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. ** Bug watch added: freedesktop.org Bugzilla #22576 https://bugs.freedesktop.org/show_bug.cgi?id=22576 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/539163 Title: [Legacy Radeon cards] Desktop effects/compiz: display brightness fluctuation with zoom, workspace switch or Expo To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/539163/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
