http://bugzilla.kernel.org/show_bug.cgi?id=14852
Summary: Sleep/resume cycle causes video display to freeze
after some time
Product: ACPI
Version: 2.5
Kernel Version: 2.6.32.x
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Power-Sleep-Wake
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Regression: No
I own a MSI Wind U100 netbook (specs below) and I have a reproducible
problem with kernels 2.6.32.x which did not occur with 2.6.31.x, related
possibly to a regression in the ACPI layer. (I have checked that this affects
the mainline kernel already.) The system otherwise runs the most recent Debian
sid distribution (Sidux) with Xorg-server 1.6.5 on an Intel video chip 945GME;
same
problem occurs with the sidux kernel 2.6.32.2.
It happens randomly (one time out of 3 or 4) that suspend fails, leaving the
machine in active state but with video freezed. In other circumstances, the
suspend/resume cycle works but after some time (a few minutes at most), the
video display starts to blink briefly - this affects both the X session and the
console sessions; then blinking becomes more and more frequent and after some
time the video display freezes completely; the system then still reacts to
keyboard input, however, and can be for instance rebooted by using Ctrl-Alt-F1
Ctrl-Alt-Del from the freezed X session.
There may be a connection with the Atheros wireless driver (r8169), since
a prior "rmmod r8169" seems to help avoiding immediate freezes. This does not
solve the problem either.
Jean-Pierre Demailly
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