I'm confirming this bug report, since all needed Information is now available.
>From xorg.0.log: (EE) intel(0): underrun on pipe B! (EE) intel(0): underrun on pipe B! (WW) intel(0): Fail to clip video to any crtc! (WW) intel(0): Fail to clip video to any crtc! >From lspci-vvnn: 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 03) ** Changed in: acpi (Ubuntu) Status: Incomplete => Confirmed -- brightness applet causes desktop to lag https://bugs.launchpad.net/bugs/256552 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs