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Just a few days ago I installed new wifi driver and everything seemed to work fine on Lenovo ThinkPad S440. The problem is that the system crashes unexpectedly. This is a pastebin of dmesg (/var/log/syslog) output so you could see what's happening. When the system crashes, X and all other programs crash. I can't even switch to tty and restart X. Can't be reproduced. Don't know how to show you the output I see on the screen.

Update
I used a kernel boot flag acpi_os=Windows noapic on my Ubuntu 12.04 on Lenovo ThinkPad S440 because I suppose that if they've build it with Windows8+ in mind, it could help somehow, but I'm not sure.

Update 2
Here is a screenshot of what happens unexpectedly. Can't reproduce it. Didn't test it with Windows and wouldn't like to do this. I need linux for work.

enter image description here

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  • Is the system totally stable in Windows? (Can you rule out hardware?)
    – James T Snell
    Commented Jan 29, 2014 at 21:00
  • No, didn't test it with Windows. See please Update 2.
    – magnump0
    Commented Jan 30, 2014 at 14:24
  • Definitely a kernel panic. I'd wager the wireless driver is killing you. It could also be a hardware fault. You could try booting on older kernels, there may be glimmer of hope there. Else, I'd first try a different wireless card.
    – James T Snell
    Commented Jan 31, 2014 at 1:50
  • here is a main thread
    – magnump0
    Commented Feb 3, 2014 at 10:40

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