severity 833419 grave retitle 833419 freezes screen requiring powering off of the computer thanks In fact not only a black screen (Thinkpad), but (Acer desktop) shortly afterwards it hangs the whole computer with a frozen screen.
Several times hitting on the power button produce Aug 5 14:35:33 jidanni6 systemd[1]: Stopped target Timers. Aug 5 14:35:33 jidanni6 systemd[1]: Stopped Daily apt activities. Aug 5 14:35:33 jidanni6 systemd[1]: Stopping User Manager for UID 1000... Aug 5 14:35:33 jidanni6 systemd[1]: Stopped target Sound Card. Aug 5 14:35:33 jidanni6 systemd[1]: Stopping ACPI event daemon... Aug 5 14:35:33 jidanni6 systemd[1]: Stopping LSB: Start NTP daemon... Aug 5 14:35:33 jidanni6 systemd[1]: Stopping Session 1 of user jidanni. Aug 5 14:35:33 jidanni6 systemd[1]: Stopped target Graphical Interface. Aug 5 14:35:33 jidanni6 systemd[1]: Stopped target Multi-User System. Aug 5 14:35:48 jidanni6 kernel: [13258.804053] nouveau 0000:00:05.0: WebKitWebProces[5809]: failed to idle channel 5 [WebKitWebProces[5809]] Aug 5 14:36:03 jidanni6 kernel: [13273.832035] nouveau 0000:00:05.0: WebKitWebProces[5809]: failed to idle channel 5 [WebKitWebProces[5809]] Aug 5 14:35:33 jidanni6 systemd[1]: Stopping Deferred execution scheduler... Aug 5 14:36:07 jidanni6 rsyslogd: [origin software="rsyslogd" swVersion="8.16.0" x-pid="1507" x-info="http://www.rsyslog.com"] exiting on signal 15. but it still won't let go of the frozen screen. So one must hold down the power button for several seconds completely turning off the machine. Then we power on again, the system doing FSCK etc. In fact already twice today. $ midori facebook.com and before long must power down and back up, will all filesystems needing a check, etc. So I will remove midori from this j6 machine of mine. product: AMD Athlon(tm) 64 Processor 3400+ (Acer desktop) vendor: Advanced Micro Devices [AMD] physical id: 6 bus info: cpu@0 version: 15.15.2 size: 1800MHz capacity: 2200MHz width: 64 bits