Dear all,
I'm a happy user of Xubuntu and have found it hassle-free through most of the years that I used it. However, unfortunately I've run into a severe issue on my ThinkPad T450. Previously I asked for help in the #xubuntu channel and was kindly advised; now I'm posting here to continue the conversation with a wider audience.
SEE HERE FOR SOLUTION
The issue is when I use FireFox to watch YouTube it is almost guaranteed that the system will hang, become unresponsive and then require a hard reset.
I'm using Xubuntu 19.04.
The laptop is a ThinkPad T450. It has a standard configuration except that I installed a SSD. I ran a comprehensive self-test using the Lenovo BIOS' testing feature and everything was given the all-clear.
I'm not the only owner of a T450 in my household. Curiously, this other T450 which runs Xubuntu 18.04 (LTS) does not manifest the same issue. This system also uses FireFox as its browser.
I was advised to check the system logfiles. The only mention of anything likely in the logfiles is the xsession-errors file:
Code:
(nm-applet:1321): Gtk-WARNING **: 21:01:42.453: Can't set a parent on widget which has a parent
(xfce4-panel:1291): xfce4-panel-CRITICAL **: 21:01:45.450: panel-window.c:2245 (panel_window_active_window_geometry_changed): expression 'WNCK_IS_WINDOW (active_window)' failed.
(/usr/lib/firefox/firefox:1631): dconf-WARNING **: 21:01:47.129: Unable to open /var/lib/snapd/desktop/dconf/profile/user: Permission denied
[Child 1577, MediaDecoderStateMachine #1] WARNING: Decoder=7f15d3e94c00 Decode error: NS_ERROR_DOM_MEDIA_FATAL_ERR (0x806e0005) - RefPtr<mozilla::MozPromise<RefPtr<mozilla::MediaTrackDemuxer::SamplesHolder>, mozilla::MediaResult, true> > mozilla::MediaSourceTrackDemuxer::DoGetSamples(int32_t): manager is detached.: file /build/firefox-9JL5Vx/firefox-69.0+build2/dom/media/MediaDecoderStateMachine.cpp, line 3309
[Child 1577, MediaDecoderStateMachine #1] WARNING: Decoder=7f15d3e94c00 Decode error: NS_ERROR_DOM_MEDIA_FATAL_ERR (0x806e0005) - RefPtr<mozilla::MozPromise<RefPtr<mozilla::MediaTrackDemuxer::SamplesHolder>, mozilla::MediaResult, true> > mozilla::MediaSourceTrackDemuxer::DoGetSamples(int32_t): manager is detached.: file /build/firefox-9JL5Vx/firefox-69.0+build2/dom/media/MediaDecoderStateMachine.cpp, line 3309
That error mentioning Firefox is repeated about fifteen times very near the end of the logfile; concurrent with the hang.
I'll welcome any help or suggestions.
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