Package: src:linux
Version: 4.4.6-1
Severity: important
Dear Maintainer,
Since the update to 4.4.0-1 i've been regularly encountering a problem where
virtual consoles (available by pressing Ctrl + Alt + F1..6) "freeze up" after
working in the X session for some time. Namely, one of two things happen:
* Sometimes every virtual console shows no login prompt, but only an unmoving,
unblinking cursor. This seems to only happen if I am not logged into any text
console.
* Sometimes the same image will show up for all consoles (no matter which one I
switch to), which is a frozen image from one of them. This can happen whether
I'm logged in on one of the ttys or not.
The consoles then react to no input. I can switch back to the X session by
pressing Ctrl+Alt+F7 and back to text consoles again. The X session continues
to work normally, but usually there are various display glitches, like some
windows not rendering properly. In one case all GTK+ programs stopped showing
text (Qt programs continued to work).
So far I've only established that it happens after about 20-30 minutes of
actively working in the X session, but it isn't bound to any program in
particular. I haven't seen it trigger while working in a virtual console, even
if the X session is running, unless I first switch to the X session.
This never happened under previous kernel versions I've used (4.1, 4.2, 4.3).
Previous kernel versions were affected by another bug though [1], although it
never caused any problems other than an error message and an occasional little
display glitch. That bug no longer occurs for me under 4.4.0, but now this much
more serious bug does.
At this moment the bug has already been triggered. dmesg shows no messages
other than what's attached. Although bbswitch is loaded, I haven't run any
program with optirun/primusrun since reboot.
[1] https://bugzilla.kernel.org/show_bug.cgi?id=95461
-- Package-specific info:
** Version:
Linux version 4.4.0-1-amd64 (debian-ker...@lists.debian.org) (gcc version 5.3.1
20160307 (Debian 5.3.1-11) ) #1 SMP Debian 4.4.6-1 (2016-03-17)
** Command line:
BOOT_IMAGE=/boot/vmlinuz-4.4.0-1-amd64
root=UUID=808626fe-93c8-4f70-a04f-e8e9922c2737 ro quiet splash
** Tainted: O (4096)
* Out-of-tree module has been loaded.
** Kernel log:
[ 13.772072] ath: Regpair used: 0x60
[ 13.906499] intel_rapl: Found RAPL domain package
[ 13.906501] intel_rapl: Found RAPL domain core
[ 13.906503] intel_rapl: Found RAPL domain uncore
[ 13.906512] intel_rapl: RAPL package 0 domain package locked by BIOS
[ 14.021854] ACPI: Video Device [PEGP] (multi-head: yes rom: yes post: no)
[ 14.022672] input: Video Bus as
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:02/LNXVIDEO:00/input/input14
[ 14.023744] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
[ 14.028162] input: Video Bus as
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:01/input/input15
[ 14.028256] [drm] Initialized i915 1.6.0 20151010 for :00:02.0 on minor 0
[ 14.028433] ACPI Warning: SystemIO range
0xF040-0xF05F conflicts with OpRegion
0xF040-0xF04F (\SMB0) (20150930/utaddress-254)
[ 14.028438] ACPI Warning: SystemIO range
0xF040-0xF05F conflicts with OpRegion
0xF040-0xF04F (\_SB_.PCI0.SBUS.SMBI)
(20150930/utaddress-254)
[ 14.028440] ACPI: If an ACPI driver is available for this device, you should
use it instead of the native driver
[ 14.063700] input: PC Speaker as /devices/platform/pcspkr/input/input16
[ 14.099522] input: HDA Intel PCH Headphone as
/devices/pci:00/:00:1b.0/sound/card0/input13
[ 14.099614] input: HDA Intel PCH HDMI/DP,pcm=3 as
/devices/pci:00/:00:1b.0/sound/card0/input17
[ 14.147935] Console: switching to colour frame buffer device 170x48
[ 14.151023] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 14.151369] ieee80211 phy0: Atheros AR9485 Rev:1 mem=0xc9c0,
irq=17
[ 14.152116] i915 :00:02.0: fb0: inteldrmfb frame buffer device
[ 14.248528] iTCO_vendor_support: vendor-support=0
[ 14.261211] Bluetooth: Core ver 2.21
[ 14.261234] NET: Registered protocol family 31
[ 14.261236] Bluetooth: HCI device and connection manager initialized
[ 14.261243] Bluetooth: HCI socket layer initialized
[ 14.261247] Bluetooth: L2CAP socket layer initialized
[ 14.261254] Bluetooth: SCO socket layer initialized
[ 14.274123] asus_wmi: ASUS WMI generic driver loaded
[ 14.276578] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
[ 14.276642] iTCO_wdt: Found a Panther Point TCO device (Version=2,
TCOBASE=0x0460)
[ 14.276790] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[ 14.278606] asus_wmi: Initialization: 0x1
[ 14.278668] asus_wmi: BIOS WMI version: 7.9
[ 14.278735] asus_wmi: SFUN value: 0x4a0877
[ 14.280217] input: Asus WMI hotkeys as
/devices/platform/asus-nb-wmi/input/input18
[ 14.304701] asus_wmi:
