kworker 100% effectively freezes device

[kevin gunn]

Now seen this twice - both times, the browser/oxide has been involved.

second time: Once video was just starting on a website & I unplugged from ext monitor. had quite a few apps open. again, tapped button, then unity8 takes over as the constant running app (just like below) - altho this time, that took a while ~2min maybe. And the screen eventually flashed due to power button hit...just took a long time.

First time
testing ubuntu-pd + silo 19
upon plug in to external monitor, phone displays trackpad info, external monitor flickered black (like it had a signal but nothing rendered) - no change
unplugged, trackpad info remained, waited, checked top thot it was a crash found the following
(also subsequent plugged back into ext monitor, just black screen/signal & device gui just remains frozen with trackpad info)

Not was running browser and some other apps.

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
 6911 root 20 0 0 0 0 R 100.0 0.0 0:57.62 kworker/u:5
 3890 phablet 20 0 545936 236684 48736 S 23.9 12.6 5:21.37 oxide-renderer
 9200 phablet 20 0 6260 1276 808 R 1.6 0.1 0:00.29 top
 3786 phablet 20 0 824348 135964 71100 S 1.3 7.2 4:02.47 webbrowser-app
 1330 9999 20 0 10904 828 488 S 0.6 0.0 0:04.99 sensors.qcom
 1332 root 0 -20 7572 552 400 S 0.6 0.0 0:11.45 mpdecision
 1221 root 20 0 221572 15840 10432 S 0.3 0.8 0:52.09 unity-system-co
 1334 root 20 0 8244 1628 1228 S 0.3 0.1 0:04.13 Binder_2
 1595 root 20 0 0 0 0 S 0.3 0.0 0:03.23 TX_Thread
 1670 phablet 20 0 5300 884 744 S 0.3 0.0 0:01.15 upstart-event-b
 1908 phablet 20 0 5912 736 396 S 0.3 0.0 0:01.22 upstart-file-br
 2049 phablet 20 0 41256 1756 1368 S 0.3 0.1 0:00.10 adbd
 8886 root 20 0 0 0 0 S 0.3 0.0 0:00.04 kworker/1:1
 9180 phablet 20 0 10808 1328 652 S 0.3 0.1 0:00.03 sshd
    1 root 20 0 4264 2688 1080 S 0.0 0.1 0:09.39 init
    2 root -2 0 0 0 0 S 0.0 0.0 0:00.39 kthreadd
    3 root 20 0 0 0 0 S 0.0 0.0 0:00.04 ksoftirqd/0

Still in frozen state described above, tapped on power button, now unity8 is pegging cpu

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
 2368 phablet 20 0 556468 132948 48828 S 200.1 7.1 2:50.80 unity8
  105 root 20 0 0 0 0 R 100.0 0.0 3:41.61 kworker/u:2
 3890 phablet 20 0 542864 240168 48760 R 29.1 12.8 7:43.71 oxide-renderer
 3786 phablet 20 0 828444 139712 71104 S 2.3 7.4 4:17.77 webbrowser-app
12246 phablet 20 0 6260 1264 808 R 1.3 0.1 0:00.42 top
 1332 root 0 -20 7572 552 400 S 0.6 0.0 0:14.80 mpdecision
 1330 9999 20 0 10904 580 488 S 0.3 0.0 0:06.83 sensors.qcom
 1525 phablet 20 0 7076 2372 1192 S 0.3 0.1 0:14.30 upstart
 1588 root 20 0 79652 6408 4564 S 0.3 0.3 0:02.08 NetworkManager
 1907 phablet 20 0 5304 572 336 S 0.3 0.0 0:02.81 upstart-dbus-br
 1931 phablet 20 0 5568 812 348 S 0.3 0.0 0:03.38 upstart-dbus-br
 2049 phablet 20 0 49448 1792 1380 S 0.3 0.1 0:00.25 adbd
11975 root 20 0 0 0 0 S 0.3 0.0 0:00.02 kworker/0:0
12187 phablet 20 0 10808 1328 652 S 0.3 0.1 0:00.07 sshd
    1 root 20 0 4264 2556 1080 S 0.0 0.1 0:10.13 init
    2 root -2 0 0 0 0 S 0.0 0.0 0:00.43 kthreadd
    3 root 20 0 0 0 0 S 0.0 0.0 0:00.07 ksoftirqd/0