
Ubuntu 20.04 hangs up frequently, Thunderbird JS error
Frequently my system freezes suddenly or rapidly. First times I remember I got "Unresponsive script: chrome://calendar/content/widgets/calendar-minmonth.js 519" and other similar. I only have 2 extension enabled, nothing about "calendar" I mainly have in use Thunderbird, Firefox and Chrome. Nowadays, sometimes I first get an error in Thunderbird about Javascript error. An hour ago I got another freeze. Clock freezes at 15:33 and I rebooted at 15:44 Here are the events I see in syslog during that time. Oct 18 15:31:52 Ubuntu_20_04 thunderbird.desktop[4293]: JavaScript error: resource:///modules/AddrBookCard.jsm, line 197: NS_ERROR_NOT_AVAILABLE: PreferDisplayName: undefined - not a boolean Oct 18 15:33:23 Ubuntu_20_04 systemd[1]: Started Run anacron jobs. Oct 18 15:33:23 Ubuntu_20_04 anacron[50624]: Anacron 2.3 started on 2021-10-18 Oct 18 15:33:23 Ubuntu_20_04 anacron[50624]: Normal exit (0 jobs run) Oct 18 15:33:23 Ubuntu_20_04 systemd[1]: anacron.service: Succeeded. Oct 18 15:33:39 Ubuntu_20_04 thunderbird.desktop[4293]: [2021-10-18T18:33:39Z ERROR style::stylesheets::rule_parser] Saw @import rule, but no way to trigger the load Oct 18 15:36:06 Ubuntu_20_04 /usr/lib/gdm3/gdm-x-session[1352]: (II) event4 - KYE Wireless Mouse: SYN_DROPPED event - some input events have been lost. Oct 18 15:44:01 Ubuntu_20_04 kernel: [ 0.000000] microcode: microcode updated early to revision 0xea, date = 2021-01-25 What could be happening? Thank you!