[Nix-dev] Disappearing X session on some systems

[Kirill Elagin]

Is there anything noteworthy in the X log? dmesg?
Surely it doesn’t just disappear without saying anything at all, right?

On Sat, May 27, 2017 at 6:57 PM Evan Rowley <rowley.evan at gmail.com> wrote:

> Has anyone left their NixOS machine running for awhile, come back to it,
> and saw a console on tty7 where X used to be running? I experience this
> when I leave two of my NixOS systems alone for awhile. Both are using Gnome
> 3. It affects my ThinkPad E465 which is running an AMD A10-8700P & Radeon
> R6 M340DX. It also affects my SuperMicro SYS-7038A-i with Intel Xeon CPUs
> and Nvidia 8800 GT graphics. It never happens while I'm using these, just
> only when I've left them alone for a while - like overnight, for example. I
> have not seen this behavior on my NixOS ThinkPad T420 with Intel i5-2520M
> and integrated graphics. I realize that the T420 is relatively mature in
> Linux support & things working well is somewhat expected - but a crashing X
> session seems to be abnormal, even for hardware that's less tested. One
> major difference between the T420 and the other systems is the T420 is
> using integrated graphics while the other systems are using dedicated
> graphics cards - which is why I listed out the cards here. If anyone knows
> of ongoing issues with NixOS/X/graphics which could be related, how it
> further investigate the issue, ideas on a fix, or is experiencing the same
> kind of issue - please reply. :)
>
> --
>  - EJR
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