[Linux] Crash on alt+tab, unable to reconnect to competetive match

[Snevzor]

Accidentally did an alt+tab, returning to desktop. I know this crashes source games sometimes and it did during a competetive match.

Unfortunately I was unable to reconnect to the match. Gave up trying after the sixth time. There were still 2 friends (Lieven and Anthony, not that this matters but they wanted to be mentioned on this report and I'm getting payed for that) playing on that match.

Some screens:

http://cloud-4.steampowered.com/ugc/541879712553585550/0BE6D81E111356888EAE07A75A5FE4AC029B9385/

http://cloud-4.steampowered.com/ugc/541879712553581451/35A01B98D33A62E243095C9C49CFBB247D9B4833/

System info (do you need the dump also?):

Processor Information:
Vendor: GenuineIntel
CPU Family: 0x6
CPU Model: 0xf
CPU Stepping: 0xb
CPU Type: 0x0
Speed: 2394 Mhz
4 logical processors
4 physical processors
HyperThreading: Unsupported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Supported
SSE4a: Unsupported
SSE41: Unsupported
SSE42: Unsupported

Network Information:
Network Speed:

Operating System Version:
Ubuntu 14.04.1 LTS (64 bit)
Kernel Name: Linux
Kernel Version: 3.13.0-32-generic
X Server Vendor: The X.Org Foundation
X Server Release: 11501000
X Window Manager: Openbox [EDIT]: LXDE Desktop environment (Lubuntu)
Steam Runtime Version: steam-runtime-release_2014-08-20

Video Card:
Driver: NVIDIA Corporation GeForce 8800 GT/PCIe/SSE2

Driver Version:  3.3.0 NVIDIA 331.38
OpenGL Version: 3.3
Desktop Color Depth: 24 bits per pixel
Monitor Refresh Rate: 59 Hz
VendorID:  0x10de
DeviceID:  0x611
Number of Monitors:  1
Number of Logical Video Cards:  1
Primary Display Resolution:  1680 x 1050
Desktop Resolution: 1680 x 1050
Primary Display Size: 18,66" x 11,65"  (21,97" diag)
                                        47,4cm x 29,6cm  (55,8cm diag)
Primary Bus: PCI Express 16x
Primary VRAM: 512 MB
Supported MSAA Modes:  2x 4x 8x 16x 

Sound card:
Audio device: Realtek ALC883

Memory:
RAM: 3952 Mb

Miscellaneous:
UI Language: English
LANG: nl_BE.UTF-8
Microphone: Not set
Total Hard Disk Space Available: 110669 Mb
Largest Free Hard Disk Block: 2960 Mb

Installed software:

Recent Failure Reports:
Thu Sep 25 20:24:22 2014 GMT: file ''/tmp/dumps/crash_20140925220232_1.dmp'', upload yes: ''CrashID=bp-a205e9bb-1eaa-48dc-a862-a1ef22140925''

[Snevzor]

I've had multiple similar crashes by now but not always accompagnied with the inability to rejoin a competitive match. Might be two separate bugs.

[ceribik]

Was trying to reproduce this to get a backtrace and this is what I got. Happened when repetively alt-tabbing while/after loading a new map:

http://pastebin.com/mFVMvcsS

This doesn't seem too helpful though as it's in the nvidia drivers.

If you disable multithreading, do you still get crashes?

[Snevzor]

+Thanks for checking ceribik.
I will try it when I get a chance without multithreading but without multithreading my fps is way too low.
So it might help to find the bug but if it works it won't be a workaround for me.

EDIT: sometimes it crashes after alt+tab, sometimes not. That's why it's difficult to check with multicore rendering disabled (too low fps).

[Yanpas]

Discovered that when I changed window manager from xfwm4 to compiz the game strted to crash on alttab

[Tele42]

Closing as general video driver quality from 2014 is no longer relevant, if you are still experiencing this issue, please update to a recent driver release and if the issue persists, please open a new issue report.