Gah. Your tab just crashed. (Firefox)

Development Development Testing
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I am getting this a lot in FF in Lx 4 but not all in FF in Lx 3. Issue has not happened in other browsers mainly chromium so far as I know.

My question is are other Lx 4 users seeing this in FF? Or is this just happening to me. Would like to know before filing a bug report.

If someone else has reported this I have missed it.

If I run FF from command line there is no output about this or anything else.

If I run FF with ‘firefox -safe-mode’ and a new profile this still happens.

about:crashes gives this output >>> Hmm. That address doesn’t look right. >>> Which I’m fairly sure is wrong?

I have tried unchecking “Use recommended performance settings” and “Use hardware acceleration where available” and neither has helped a bit. Also reinstalled FF.

I believe the only key fact I have so far is that I have zero problem with this in Lx 3 (FF 65.0.2) and continual problems with this in Lx 4 (FF 66.0.2). Or if about:crashes is not working could something be wrong with our FF package? Wonder if downgrading to 65.0.2 would fix this in Lx 4?

There are multiple FF bug reports about this but other than some of the things I tried above they aren’t very helpful. At least the ones I’ve found.

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Screenshot_20190418_154006
Screenshot_20190418_1540061920×1080 88.1 KB

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Here’s 3 tab crashes in row from journal"

Apr 18 16:25:41 ben-2432-H97M-E kernel: Web Content[5642]: segfault at 0 ip 00007f72de202080 sp 00007ffd8e5be7e0 error 4 in libthai.so.0.3.1[7f72de1ff000+8000]
Apr 18 16:25:41 ben-2432-H97M-E kernel: Code: 05 e8 3d 05 00 00 48 85 c0 74 0e 49 89 06 4c 89 f0 48 83 c4 08 5b 41 5e c3 4c 89 f7 e8 29 ec ff ff 45 31 f6 eb e8 53 48 89 fb <48> 8b 3f e8 28>
Apr 18 16:25:41 ben-2432-H97M-E systemd[1]: Started Process Core Dump (PID 5730/UID 0).
Apr 18 16:25:41 ben-2432-H97M-E systemd-coredump[5731]: Failed to generate stack trace: Unwinding not supported for this architecture
Apr 18 16:25:41 ben-2432-H97M-E systemd-coredump[5731]: Process 5642 (Web Content) of user 1001 dumped core.
Apr 18 16:25:41 ben-2432-H97M-E systemd[1]: systemd-coredump@12-5730-0.service: Succeeded.
Apr 18 16:25:57 ben-2432-H97M-E plasmashell[1460]: qt.qpa.xcb: QXcbConnection: XCB error: 2 (BadValue), sequence: 38401, resource id: 2097159, major code: 143 (Unknown), minor code: 3
Apr 18 16:25:58 ben-2432-H97M-E plasmashell[1460]: qt.qpa.xcb: QXcbConnection: XCB error: 2 (BadValue), sequence: 38476, resource id: 67108880, major code: 143 (Unknown), minor code: 3
Apr 18 16:26:14 ben-2432-H97M-E kernel: Web Content[5740]: segfault at 0 ip 00007f0857884080 sp 00007fff5dc3b510 error 4 in libthai.so.0.3.1[7f0857881000+8000]
Apr 18 16:26:14 ben-2432-H97M-E kernel: Code: 05 e8 3d 05 00 00 48 85 c0 74 0e 49 89 06 4c 89 f0 48 83 c4 08 5b 41 5e c3 4c 89 f7 e8 29 ec ff ff 45 31 f6 eb e8 53 48 89 fb <48> 8b 3f e8 28>
Apr 18 16:26:14 ben-2432-H97M-E systemd[1]: Started Process Core Dump (PID 5810/UID 0).
Apr 18 16:26:14 ben-2432-H97M-E systemd-coredump[5811]: Failed to generate stack trace: Unwinding not supported for this architecture
Apr 18 16:26:14 ben-2432-H97M-E systemd-coredump[5811]: Process 5740 (Web Content) of user 1001 dumped core.
Apr 18 16:26:14 ben-2432-H97M-E systemd[1]: systemd-coredump@13-5810-0.service: Succeeded.
Apr 18 16:26:46 ben-2432-H97M-E kernel: Web Content[5367]: segfault at 0 ip 00007f2b2612a080 sp 00007ffc9e29f980 error 4 in libthai.so.0.3.1[7f2b26127000+8000]
Apr 18 16:26:46 ben-2432-H97M-E kernel: Code: 05 e8 3d 05 00 00 48 85 c0 74 0e 49 89 06 4c 89 f0 48 83 c4 08 5b 41 5e c3 4c 89 f7 e8 29 ec ff ff 45 31 f6 eb e8 53 48 89 fb <48> 8b 3f e8 28>
Apr 18 16:26:46 ben-2432-H97M-E systemd[1]: Started Process Core Dump (PID 5819/UID 0).
Apr 18 16:26:46 ben-2432-H97M-E systemd-coredump[5820]: Failed to generate stack trace: Unwinding not supported for this architecture
Apr 18 16:26:46 ben-2432-H97M-E systemd-coredump[5820]: Process 5367 (Web Content) of user 1001 dumped core.
Apr 18 16:26:46 ben-2432-H97M-E systemd[1]: systemd-coredump@14-5819-0.service: Succeeded.

libthai.so.0.3.1??? Huh?

Post-edit: Fixed with an update if I remember correctly.