FS#50418 - "Can't open display" after suspend
Attached to Project:
Arch Linux
Opened by Reverend Homer (reverendhomer) - Tuesday, 16 August 2016, 20:41 GMT
Last edited by Doug Newgard (Scimmia) - Thursday, 18 August 2016, 04:19 GMT
Opened by Reverend Homer (reverendhomer) - Tuesday, 16 August 2016, 20:41 GMT
Last edited by Doug Newgard (Scimmia) - Thursday, 18 August 2016, 04:19 GMT
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Details
Description:
I have a Samsung NC110 laptop with Intel Atom N455 inside. Every time after suspend it losts connection with display. All opened windows works just fine but I can't open any new window: ecko@localhost:~$ xterm ^Cecko@localhost:~$ echo $DISPLAY :0 ecko@localhost:~$ systemctl suspend ecko@localhost:~$ xterm No protocol specified xterm: Xt error: Can't open display: :0 ecko@localhost:~$ echo $DISPLAY :0 ecko@localhost:~$ I've attached dmesg output from the suspend. You can find some stack trace there. Additional info: * package version(s) xf86-video-intel 1:2.99.917+691+ga77397a-1 xorg-server 1.18.4-1 linux 4.6.4-1 * config and/or log files etc. See attached file Steps to reproduce: * Find a Samsung NC110 Laptop with Arch Linux on it * Put system in suspend * Try to open any X window 
dmesg.txt
(9.2 KiB)
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This task depends upon
Closed by Doug Newgard (Scimmia)
Thursday, 18 August 2016, 04:19 GMT
Reason for closing: Not a bug
Additional comments about closing: Configuration issue
Thursday, 18 August 2016, 04:19 GMT
Reason for closing: Not a bug
Additional comments about closing: Configuration issue
https://bbs.archlinux.org/viewtopic.php?id=159573
Same issue, possible solution.
What does "hostname" return before and after suspending? Probably your hostname is part of the access list, when it changes you won't be able to start new applications on your $DISPLAY.
I've forgot to create /etc/hostname during install. And before suspend "hostname" was "localhost", but after – "localhost.localdomain". Now I've created /etc/hostname and it's working just fine!
Thanks for your help and sorry for noise.