# X server lockup

**URL:** https://support.blue-systems.com/t/x-server-lockup/4498
**Category:** Rolling 2018.08
**Created:** [October 14, 2018, 9:44pm UTC](https://support.blue-systems.com/t/x-server-lockup/4498 "2018-10-14T21:44:30Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![CranKey](https://support.blue-systems.com/letter_avatar/crankey/32/5_5575768a8748004e209b776fc1b2916d.png) [@CranKey](https://support.blue-systems.com/u/CranKey)
#### Post date: [October 14, 2018, 9:44pm UTC](https://support.blue-systems.com/t/x-server-lockup/4498/1 "2018-10-14T21:44:30Z")

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I’ve recently done a fresh install of Rolling off of the latest image on the site. It’s working reasonably well except that I’m getting random lockups every so often. I restart the X server (ctl-alt-bksp) and log back in and carry on but of course I’ve lost what I was working on.  
Here’s the log.

`$ dmesg | grep segfault
[13596.723495] Chrome_~dThread[24947]: segfault at 0 ip 00007f600592d1d3 sp 00007f6001a68b00 error 6 in libxul.so[7f6005924000+4a0d000]
[13596.723776] Chrome_~dThread[29802]: segfault at 0 ip 00007f13305ee1d3 sp 00007f132c724b00 error 6 in libxul.so[7f13305e5000+4a0d000]
[27391.856875] dolphin[5875]: segfault at 8 ip 00007f15942dc51c sp 00007ffc83fcfb10 error 4 in libQt5XcbQpa.so.5.11.2[7f15942d5000+d5000]
[27391.908086] Chrome_~dThread[3047]: segfault at 0 ip 00007f5121c921d3 sp 00007f511ddc8b00 error 6 in libxul.so[7f5121c89000+4a0d000]
[27391.908203] Chrome_~dThread[4930]: segfault at 0 ip 00007f3ca93dd1d3 sp 00007f3ca5518b00 error 6 in libxul.so[7f3ca93d4000+4a0d000] `

Any suggestions?

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<div class="post-metadata">

### Author: ![AJSlye](https://support.blue-systems.com/user_avatar/support.blue-systems.com/ajslye/32/263_2.png) [@AJSlye](https://support.blue-systems.com/u/AJSlye)
#### Post date: [October 14, 2018, 10:11pm UTC](https://support.blue-systems.com/t/x-server-lockup/4498/2 "2018-10-14T22:11:43Z")

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This seems to be a common bug in Firefox.

Here is the bug reports I’ve found so far.  
[https://bugzilla.mozilla.org/show\_bug.cgi?id=1428346](https://bugzilla.mozilla.org/show_bug.cgi?id=1428346)  
[https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1766875](https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1766875)

I would try disabling the plugins (extensions) first, and if stable start to re-enable them one at a time until you find the culprit.

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<div class="post-metadata">

### Author: ![CranKey](https://support.blue-systems.com/letter_avatar/crankey/32/5_5575768a8748004e209b776fc1b2916d.png) [@CranKey](https://support.blue-systems.com/u/CranKey)
#### Post date: [October 15, 2018, 12:34am UTC](https://support.blue-systems.com/t/x-server-lockup/4498/3 "2018-10-15T00:34:39Z")

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Thanks, I’ll give that a go. It sounds like a good approach because my other Netrunner PC doesn’t have this problem even though they’re both running Rolling.