Bug#802452: nvidia-legacy-304xx-driver: X fails to start

Luis Carvalheiro lccarvalheiro at gmail.com
Tue Oct 20 09:10:36 UTC 2015 

Package: nvidia-legacy-304xx-driver
Version: 304.125-2
Severity: critical
Justification: breaks the whole system

Dear Maintainer,

since my last dist-upgrade, X fails to start when installing this package. When
system boots, the screen starts to flicker, and X doesn't come up.

The error lines in Xorg.0.log are:

EE) [mi] EQ overflowing.  Additional events will be discarded until existing
events are processed.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/Xorg (xorg_backtrace+0x4e) [0x55ad24a5685e]
(EE) 1: /usr/bin/Xorg (mieqEnqueue+0x253) [0x55ad24a38893]
(EE) 2: /usr/bin/Xorg (QueuePointerEvents+0x52) [0x55ad24912fd2]
(EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbb45779000+0x60a7)
[0x7fbb4577f0a7]
(EE) 4: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fbb45779000+0x687d)
[0x7fbb4577f87d]
(EE) 5: /usr/bin/Xorg (0x55ad248a3000+0x96848) [0x55ad24939848]
(EE) 6: /usr/bin/Xorg (0x55ad248a3000+0xbf6f8) [0x55ad249626f8]
(EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (0x7fbb4ca9e000+0x35180)
[0x7fbb4cad3180]
(EE) 8: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7fbb47071000+0x9ef42)
[0x7fbb4710ff42]
(EE) 9: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7fbb47071000+0xa0c43)
[0x7fbb47111c43]
(EE) 10: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7fbb47071000+0x11fb71)
[0x7fbb47190b71]
(EE) 11: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7fbb47071000+0x701bbd)
[0x7fbb47772bbd]
(EE) 12: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7fbb47071000+0x701daf)
[0x7fbb47772daf]
(EE) 13: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7fbb47071000+0x6f19b0)
[0x7fbb477629b0]
(EE) 14: /usr/bin/Xorg (0x55ad248a3000+0x13c351) [0x55ad249df351]
(EE) 15: /usr/bin/Xorg (0x55ad248a3000+0x131f87) [0x55ad249d4f87]
(EE) 16: /usr/bin/Xorg (0x55ad248a3000+0x5807f) [0x55ad248fb07f]
(EE) 17: /usr/bin/Xorg (0x55ad248a3000+0x5c1cb) [0x55ad248ff1cb]
(EE) 18: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5)
[0x7fbb4cabfb45]
(EE) 19: /usr/bin/Xorg (0x55ad248a3000+0x465be) [0x55ad248e95be]
(EE)
(EE) [mi] These backtraces from mieqEnqueue may point to a culprit higher up
the stack.
(EE) [mi] mieq is *NOT* the cause.  It is a victim.
[  4371.719] [mi] Increasing EQ size to 1024 to prevent dropped events.
[  4371.720] [mi] EQ processing has resumed after 75 dropped events.
[  4371.720] [mi] This may be caused my a misbehaving driver monopolizing the
server's resources.


Relevant information from /var/log/messages:

Oct 19 10:16:14 munch gdm3: Unable to kill session worker process
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: X.Org X Server 1.17.2
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: Release Date:
2015-06-16
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: X Protocol Version 11,
Revision 0
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: Build Operating
System: Linux 4.2.0-1-amd64 x86_64 Debian
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: Current Operating
System: Linux munch 4.2.0-1-amd64 #1 SMP Debian 4.2.1-2 (2015-09-27) x86_64
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: Kernel command line:
BOOT_IMAGE=/boot/vmlinuz-4.2.0-1-amd64 root=UUID=5018e4ce-ecb4-43eb-
95e0-81251baa6b4a ro quiet
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: Build Date: 06 October
2015  07:27:47AM
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: xorg-server 2:1.17.2-3
(http://www.debian.org/support)
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: Current version of
pixman: 0.33.2
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: Before reporting
problems, check http://wiki.x.org
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: to make sure that you
have the latest version.
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: Markers: (--) probed,
(**) from config file, (==) default setting,
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (++) from command
line, (!!) notice, (II) informational,
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (WW) warning, (EE)
error, (NI) not implemented, (??) unknown.
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) Log file:
"/var/lib/gdm3/.local/share/xorg/Xorg.0.log", Time: Mon Oct 19 10:16:15 2015
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) Using config
file: "/etc/X11/xorg.conf"
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) Using system
config directory "/usr/share/X11/xorg.conf.d"
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) ServerLayout
"Layout0"
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (**) |-->Screen
"Screen0" (0)
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (**) |   |-->Monitor
"Monitor0"
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (**) |   |-->Device
"Device0"
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (**) |-->Input Device
"Keyboard0"
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (**) |-->Input Device
"Mouse0"
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) Automatically
adding devices
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) Automatically
enabling devices
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) Automatically
adding GPU devices
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (WW) The directory
"/usr/share/fonts/X11/cyrillic" does not exist.
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: Entry deleted from
font path.
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) FontPath set to:
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]:
/usr/share/fonts/X11/misc,
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]:
/usr/share/fonts/X11/100dpi/:unscaled,
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]:
/usr/share/fonts/X11/75dpi/:unscaled,
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]:
/usr/share/fonts/X11/Type1,
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]:
/usr/share/fonts/X11/100dpi,
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]:
/usr/share/fonts/X11/75dpi,
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: built-ins
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) ModulePath set to
"/usr/lib/xorg/modules"
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (WW) Hotplugging is
on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled.
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (WW) Disabling
Keyboard0
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (WW) Disabling Mouse0
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Loader magic:
0x5585182a0de0
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Module ABI
versions:
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: X.Org ANSI C
Emulation: 0.4
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: X.Org Video Driver:
19.0
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: X.Org XInput driver :
21.0
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: X.Org Server Extension
: 9.0
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) systemd-logind:
took control of session /org/freedesktop/login1/session/c3
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) xfree86: Adding
drm device (/dev/dri/card0)
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) systemd-logind:
got fd for /dev/dri/card0 226:0 fd 9 paused 0
Oct 19 10:16:15 munch kernel: [   40.443161] ------------[ cut here
]------------
Oct 19 10:16:15 munch kernel: [   40.443194] WARNING: CPU: 4 PID: 1785 at
/build/linux-hTOZhE/linux-4.2.1/drivers/gpu/drm/drm_ioctl.c:141
drm_setversion+0x164/0x170 [drm]()
Oct 19 10:16:15 munch kernel: [   40.443393] No drm_driver.set_busid()
implementation provided by nv_drm_driver [nvidia]. Use drm_dev_set_unique() to
set the unique name explicitly.
Oct 19 10:16:15 munch kernel: [   40.443396] Modules linked in: pci_stub
vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) binfmt_misc ip6table_filter
ip6_tables iptable_filter ip_tables x_tables nfsd auth_rpcgss oid_registry
nfs_acl nfs lockd grace fscache sunrpc nvidia(PO) snd_hda_codec_idt
snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep
snd_pcm drm dcdbas snd_timer dell_smm_hwmon evdev snd iTCO_wdt
iTCO_vendor_support lpc_ich mfd_core shpchp i5000_edac soundcore psmouse sg
coretemp pcspkr serio_raw kvm_intel tpm_tis kvm edac_core tpm i5k_amb i2c_i801
8250_fintek button rng_core acpi_cpufreq processor thermal_sys parport_pc ppdev
lp parport autofs4 ext4 crc16 mbcache jbd2 hid_generic usbhid hid sr_mod cdrom
sd_mod ata_generic ahci libahci ata_piix tg3 libata uhci_hcd ehci_pci ehci_hcd
ptp scsi_mod pps_core usbcore usb_common libphy floppy
Oct 19 10:16:15 munch kernel: [   40.443467] CPU: 4 PID: 1785 Comm: Xorg
Tainted: P           O    4.2.0-1-amd64 #1 Debian 4.2.1-2
Oct 19 10:16:15 munch kernel: [   40.443469] Hardware name: Dell Inc.
Precision WorkStation 490    /0GU083, BIOS A08 04/25/2008
Oct 19 10:16:15 munch kernel: [   40.443471]  0000000000000000 ffffffffa045fad0
ffffffff81548756 ffff8800ca767d18
Oct 19 10:16:15 munch kernel: [   40.443474]  ffffffff8106e571 ffff8800ca767de0
ffff880036847800 ffff880224ea2580
Oct 19 10:16:15 munch kernel: [   40.443477]  fffffffffffffff2 0000000000000007
ffffffff8106e5ea ffffffffa045fb78
Oct 19 10:16:15 munch kernel: [   40.443480] Call Trace:
Oct 19 10:16:15 munch kernel: [   40.443489]  [<ffffffff81548756>] ?
dump_stack+0x40/0x50
Oct 19 10:16:15 munch kernel: [   40.443494]  [<ffffffff8106e571>] ?
warn_slowpath_common+0x81/0xb0
Oct 19 10:16:15 munch kernel: [   40.443496]  [<ffffffff8106e5ea>] ?
warn_slowpath_fmt+0x4a/0x50
Oct 19 10:16:15 munch kernel: [   40.443501]  [<ffffffff8114ed4d>] ?
__generic_file_write_iter+0x16d/0x1c0
Oct 19 10:16:15 munch kernel: [   40.443511]  [<ffffffffa0430794>] ?
drm_setversion+0x164/0x170 [drm]
Oct 19 10:16:15 munch kernel: [   40.443520]  [<ffffffffa0430245>] ?
drm_ioctl+0x305/0x550 [drm]
Oct 19 10:16:15 munch kernel: [   40.443524]  [<ffffffff8143fb48>] ?
sock_sendmsg+0x38/0x50
Oct 19 10:16:15 munch kernel: [   40.443533]  [<ffffffffa0430630>] ?
drm_noop+0x40/0x40 [drm]
Oct 19 10:16:15 munch kernel: [   40.443537]  [<ffffffff811ca5a3>] ?
do_vfs_ioctl+0x2c3/0x4a0
Oct 19 10:16:15 munch kernel: [   40.443541]  [<ffffffff811b9ebd>] ?
__sb_end_write+0x2d/0x60
Oct 19 10:16:15 munch kernel: [   40.443544]  [<ffffffff811b7df0>] ?
vfs_write+0x170/0x190
Oct 19 10:16:15 munch kernel: [   40.443546]  [<ffffffff811ca7f6>] ?
SyS_ioctl+0x76/0x90
Oct 19 10:16:15 munch kernel: [   40.443550]  [<ffffffff811b540f>] ?
filp_close+0x4f/0x70
Oct 19 10:16:15 munch kernel: [   40.443553]  [<ffffffff8154de72>] ?
system_call_fast_compare_end+0xc/0x6b
Oct 19 10:16:15 munch kernel: [   40.443556] ---[ end trace 8b789ba1c0a1c79a
]---
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE) /dev/dri/card0:
failed to set DRM interface version 1.4: Invalid argument
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) systemd-logind:
releasing fd for 226:0
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (--) PCI:*(0:7:0:0)
10de:009d:10de:0322 rev 161, Mem @ 0xfa000000/16777216, 0xd0000000/268435456,
0xfb000000/16777216, I/O @ 0x0000dc80/128, BIOS @ 0x????????/131072
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) LoadModule: "glx"
Oct 19 10:16:15 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Loading
/usr/lib/xorg/modules/linux/libglx.so
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Module glx:
vendor="NVIDIA Corporation"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: compiled for 4.0.2,
module version = 1.0.0
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: Module class: X.Org
Server Extension
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) NVIDIA GLX Module
304.125  Mon Dec  1 20:22:48 PST 2014
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) LoadModule:
"nvidia"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Loading
/usr/lib/xorg/modules/drivers/nvidia_drv.so
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Module nvidia:
vendor="NVIDIA Corporation"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: compiled for 4.0.2,
module version = 1.0.0
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: Module class: X.Org
Video Driver
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) NVIDIA dlloader X
Driver  304.125  Mon Dec  1 20:00:30 PST 2014
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) NVIDIA Unified
Driver for all Supported NVIDIA GPUs
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (++) using VT number 7
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: xf86EnableIOPorts:
failed to set IOPL for I/O (Operation not permitted)
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Loading sub
module "fb"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) LoadModule: "fb"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Loading
/usr/lib/xorg/modules/libfb.so
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Module fb:
vendor="X.Org Foundation"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: compiled for 1.17.2,
module version = 1.0.0
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: ABI class: X.Org ANSI
C Emulation, version 0.4
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Loading sub
module "wfb"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) LoadModule: "wfb"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Loading
/usr/lib/xorg/modules/libwfb.so
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Module wfb:
vendor="X.Org Foundation"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: compiled for 1.17.2,
module version = 1.0.0
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: ABI class: X.Org ANSI
C Emulation, version 0.4
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Loading sub
module "ramdac"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) LoadModule:
"ramdac"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) Module "ramdac"
already built-in
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (WW) VGA arbiter:
cannot open kernel arbiter, no multi-card support
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (**) NVIDIA(0): Depth
24, (--) framebuffer bpp 32
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) NVIDIA(0): RGB
weight 888
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) NVIDIA(0):
Default visual is TrueColor
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (==) NVIDIA(0): Using
gamma correction (1.0, 1.0, 1.0)
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (**) NVIDIA(0): Option
"NoPowerConnectorCheck" "true"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (**) NVIDIA(0):
Enabling 2D acceleration
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: NVIDIA: could not open
the device file /dev/nvidiactl (Permission denied).
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE) NVIDIA(0): Failed
to initialize the NVIDIA kernel module. Please see the
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE) NVIDIA(0):
system's kernel log for additional error messages and
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE) NVIDIA(0):
consult the NVIDIA README for details.
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE) NVIDIA(0):  ***
Aborting ***
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE) NVIDIA(0):
Failing initialization of X screen 0
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) UnloadModule:
"nvidia"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) UnloadSubModule:
"wfb"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (II) UnloadSubModule:
"fb"
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE) Screen(s) found,
but none have a usable configuration.
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE)
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: Fatal server error:
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE) no screens
found(EE)
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE)
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: Please consult the The
X.Org Foundation support
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: at http://wiki.x.org
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: for help.
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE) Please also check
the log file at "/var/lib/gdm3/.local/share/xorg/Xorg.0.log" for additional
information.
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE)
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: (EE) Server terminated
with error (1). Closing log file.
Oct 19 10:16:16 munch /usr/lib/gdm3/gdm-x-session[1781]: Unable to run X server
Oct 19 10:16:16 munch gdm3: Child process -1781 was already dead.
Oct 19 10:16:16 munch gdm3: Child process 1778 was already dead.

relevant kern.log info:

Oct 19 10:03:09 munch kernel: [177312.799524] ------------[ cut here
]------------
Oct 19 10:03:09 munch kernel: [177312.799555] WARNING: CPU: 6 PID: 30301 at
/build/linux-hTOZhE/linux-4.2.1/drivers/gpu/drm/drm_ioctl.c:141
drm_setversion+0x164/0x170 [drm]()
Oct 19 10:03:09 munch kernel: [177312.799746] No drm_driver.set_busid()
implementation provided by nv_drm_driver [nvidia]. Use drm_dev_set_unique() to
set the unique name explicitly.
Oct 19 10:03:09 munch kernel: [177312.799748] Modules linked in: btrfs xor
raid6_pq ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs crc32c_generic
libcrc32c dm_mod uas usb_storage cpuid fuse binfmt_misc pci_stub vboxpci(O)
ip6table_filter ip6_tables iptable_filter vboxnetadp(O) vboxnetflt(O) ip_tables
x_tables vboxdrv(O) nfsd auth_rpcgss oid_registry nfs_acl nfs lockd grace
fscache sunrpc nvidia(PO) snd_hda_codec_idt snd_hda_codec_generic usblp
snd_hda_intel snd_hda_codec snd_hda_core drm snd_hwdep snd_pcm snd_timer
coretemp dcdbas evdev dell_smm_hwmon iTCO_wdt iTCO_vendor_support lpc_ich
i5000_edac mfd_core edac_core kvm_intel psmouse kvm snd soundcore i2c_i801
pcspkr serio_raw tpm_tis i5k_amb shpchp sg 8250_fintek tpm button rng_core
acpi_cpufreq processor thermal_sys parport_pc ppdev lp parport autofs4 ext4
crc16 mbcache jbd2 hid_generic usbhid hid sr_mod cdrom sd_mod ata_generic ahci
libahci ata_piix uhci_hcd ehci_pci libata ehci_hcd tg3 scsi_mod usbcore ptp
pps_core libphy usb_common floppy
Oct 19 10:03:09 munch kernel: [177312.799846] CPU: 6 PID: 30301 Comm: Xorg
Tainted: P        W  O    4.2.0-1-amd64 #1 Debian 4.2.1-2
Oct 19 10:03:09 munch kernel: [177312.799848] Hardware name: Dell Inc.
Precision WorkStation 490    /0GU083, BIOS A08 04/25/2008
Oct 19 10:03:09 munch kernel: [177312.799851]  0000000000000000
ffffffffa040aad0 ffffffff81548756 ffff88000d713d18
Oct 19 10:03:09 munch kernel: [177312.799855]  ffffffff8106e571
ffff88000d713de0 ffff88022517b000 ffff8801fa6e1040
Oct 19 10:03:09 munch kernel: [177312.799858]  fffffffffffffff2
0000000000000007 ffffffff8106e5ea ffffffffa040ab78
Oct 19 10:03:09 munch kernel: [177312.799861] Call Trace:
Oct 19 10:03:09 munch kernel: [177312.799871]  [<ffffffff81548756>] ?
dump_stack+0x40/0x50
Oct 19 10:03:09 munch kernel: [177312.799877]  [<ffffffff8106e571>] ?
warn_slowpath_common+0x81/0xb0
Oct 19 10:03:09 munch kernel: [177312.799880]  [<ffffffff8106e5ea>] ?
warn_slowpath_fmt+0x4a/0x50
Oct 19 10:03:09 munch kernel: [177312.799891]  [<ffffffffa03db794>] ?
drm_setversion+0x164/0x170 [drm]
Oct 19 10:03:09 munch kernel: [177312.799901]  [<ffffffffa03db245>] ?
drm_ioctl+0x305/0x550 [drm]
Oct 19 10:03:09 munch kernel: [177312.799911]  [<ffffffffa03db630>] ?
drm_noop+0x40/0x40 [drm]
Oct 19 10:03:09 munch kernel: [177312.799916]  [<ffffffff811c7489>] ?
do_filp_open+0x89/0xd0
Oct 19 10:03:09 munch kernel: [177312.799920]  [<ffffffff811ca5a3>] ?
do_vfs_ioctl+0x2c3/0x4a0
Oct 19 10:03:09 munch kernel: [177312.799922]  [<ffffffff811ca7f6>] ?
SyS_ioctl+0x76/0x90
Oct 19 10:03:09 munch kernel: [177312.799927]  [<ffffffff8154de72>] ?
system_call_fast_compare_end+0xc/0x6b
Oct 19 10:03:09 munch kernel: [177312.799929] ---[ end trace db03f2615d336224
]---





I couldn't find any more information related to this.
Regards,
luis



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