Bug#525619: xserver-xorg-video-intel: screen blank after returning to vt7
> could we please get an update, with either squeeze or higher?
Alas, yes: I still see the problem. It happens every couple days where
the screen is blank (but the backlight is on). A few days ago I had
started filling out a new Debian bug report, but then got the hang
again, rebooted, and lost track of the report -- which I just found and
am appending the version info from it.
When the problem happens, the backlight is on but the screen is blank,
and I can do everything except see what is on the screen -- so I can
switch to vt1, log in as root, and cleanly reboot. However, I found
nothing interesting in any of the log files, whether Xorg.0.log, the
syslog, xdm.log, or /var/log/messages.
Since then I've added "drm.debug=14 log_buf_len=16M" to all grub
boot-command lines (copied from a Fedora "debugging X" page). I've also
prepared a script to run (typing blind and loggin in as root) when the
problem next happens in order to get more debugging info:
d=/root/debug-blank-display
mkdir -p $d
dmesg > $d/dmesg.log
cp -p /var/log/Xorg.0.log $d/
mount -t debugfs none /sys/kernel/debug
dd if=/dev/mem of=$d/gpu_rom.dd bs=64k skip=12 count=1
intel_gpu_dump > $d/gpu_dump.log
Anything to add or subtract from that script?
And here's what was in the half-finished bug report from Feb 20:
Package: xserver-xorg-video-intel
Version: 2:2.14.0-4
Severity: normal
Every few days (so perhaps ten S3 suspend/resume cycles) the following
happens.
-- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.37 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages xserver-xorg-video-intel depends on:
ii libc6 2.11.2-11 Embedded GNU C Library: Shared lib
ii libdrm-intel1 2.4.23-3 Userspace interface to intel-speci
ii libdrm2 2.4.23-3 Userspace interface to kernel DRM
ii libpciaccess0 0.12.1-1 Generic PCI access library for X
ii libudev0 166-1 libudev shared library
ii libx11-6 2:1.4.1-4 X11 client-side library
ii libx11-xcb1 2:1.4.1-4 Xlib/XCB interface library
ii libxcb-aux0 0.3.6-1 utility libraries for X C Binding
ii libxcb-dri2-0 1.7-2 X C Binding, dri2 extension
ii libxcb1 1.7-2 X C Binding
ii libxext6 2:1.2.0-2 X11 miscellaneous extension librar
ii libxfixes3 1:4.0.5-1 X11 miscellaneous 'fixes' extensio
ii libxv1 2:1.0.6-1 X11 Video extension library
ii libxvmc1 2:1.0.6-1 X11 Video extension library
ii xserver-xorg-core [xorg-video 2:1.9.4-2 Xorg X server - core server
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