Public bug reported: Binary package hint: xserver-xorg-video-intel
I am using a Dell Latitude D430 with an Intel GM945. When I use my external 19" TFT (through DVI, 1280x1024), I occasionally get a black screen. This is not triggered by anything obvious, it just happens spontaneously. It is impossible to recover from this with restarting X, only a reboot cures it. Further investigation shows that this is caused by a long series of (EE) intel(0): underrun on pipe A! errors (some 10.000 lines in the log). I get short underruns pretty often, which results in the screen flickering for a split second, but when the long series happens, the screen stays black forever. A comparison of the intel_reg_dump output (-: works, +: black screen) confirms this as well: -(II): PIPEASTAT: 0x00000203 (status: VSYNC_INT_STATUS VBLANK_INT_STATUS OREG_UPDATE_STATUS) +(II): PIPEASTAT: 0x80000000 (status: FIFO_UNDERRUN) I have not observed this behaviour when I use the laptop undocked, with the internal screen (1280x800). This is current Jaunty with -intel 2:2.5.1-1ubuntu7. It also happened in Intrepid, but back then I didn't know about intel_reg_dumper. ProblemType: Bug Architecture: i386 DistroRelease: Ubuntu 9.04 Package: xserver-xorg-video-intel 2:2.5.1-1ubuntu7 ProcEnviron: PATH: custom, user LANG=de_DE.UTF-8 SHELL=/bin/bash ProcVersion: Linux version 2.6.28-4-generic (bui...@palmer) (gcc version 4.3.3 20081217 (prerelease) (Ubuntu 4.3.2-2ubuntu9) ) #5-Ubuntu SMP Fri Dec 26 22:48:51 UTC 2008 SourcePackage: xserver-xorg-video-intel Uname: Linux 2.6.28-4-generic i686 xkbcomp: ** Affects: xserver-xorg-video-intel (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug -- [i945] spontaneous black screen (major pipe-A underrun) https://bugs.launchpad.net/bugs/311895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs -- universe-bugs mailing list universe-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/universe-bugs