Package: linux-image-amd64
Version: 4.6+74~bpo8+1
Severity: important
Hi,
I have an Intel Nuc BOXNUC5PPYH Barebone PC and upgraded to kernel 4.6. Since
then I've seen that within the X session I get many freezes, which did not
occur with kernel 4.5. Is there a regression around ?
To reproduce the issue :
DO : start KDM
DO : open a KDE session with graphic effects enabled (like transparency)
EXPECT : the session is usable
ACTUAL : the session freezes while the mouse is still operational
Note :
I can see the following message in the logs :
Jun 24 22:20:06 pccore2duo kernel: [ 217.909567]
[drm:intel_check_cpu_fifo_underruns [i915]] *ERROR* pipe A underrun
The computer then becomes frozen under an X session but it can be reached
through SSH.
The issue did not appear with kernel 4.5.x
Workaround :
Add the following parameter to kernel command line : i915.enable_fbc=0
Rgds
-- System Information:
Debian Release: 8.5
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.6.0-0.bpo.1-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages linux-image-amd64 depends on:
ii linux-image-4.6.0-0.bpo.1-amd64 4.6.1-1~bpo8+1
linux-image-amd64 recommends no packages.
linux-image-amd64 suggests no packages.
-- no debconf information