Public bug reported:
When I lock the computer from the whisker menu, the screen goes blank.
It will remain blank even if I move the mouse, click or press keys. I
can get the screen back on with Ctrl-Alt-F1 for a command prompt. Or
Ctrl-Alt-F7 gives me large white text on a black background, saying
"This session is locked. You'll be redirected to the unlock dialog
automatically in a few seconds." And in a few seconds I do get an
unlock dialog in a few seconds. The system works normally thereafter.
If I close the laptop lid while the laptop is plugged in, the screen is
blank when I reopen it as above. Ctrl-Alt-F1 works as above. Ctrl-
Alt-F7 produces the "This session is locked" message, but it does not
proceed to the unlock dialog. This forces me to restart the computer.
Power Manager is set to lock the screen when I close the laptop lid.
If I close the laptop lid while the laptop is on battery power, the
screen is blank when I reopen it as above. Ctrl-Alt-F1 works as above.
Ctrl-Alt-F7 has no effect. This forces me to restart the computer.
Power Manager is set to switch off the display when I close the laptop
lid.
If is suspend the laptop from the whisker menu, on restore it behaves
the same as locking the computer. Ctrl-Alt-F7 allows me to get to the
unlock dialog and continue using the computer.
This is a System76 Galadro Ultra Pro.
$ lsb_release -rd
Description: Ubuntu 18.04.2 LTS
Release: 18.04
$ apt-cache policy light-locker
light-locker:
Installed: 1.8.0-1ubuntu1
Candidate: 1.8.0-1ubuntu1
Version table:
*** 1.8.0-1ubuntu1 500
500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
100 /var/lib/dpkg/status
$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 2
Core(s) per socket: 4
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 70
Model name: Intel(R) Core(TM) i7-4750HQ CPU @ 2.00GHz
Stepping: 1
CPU MHz: 798.169
CPU max MHz: 3200.0000
CPU min MHz: 800.0000
BogoMIPS: 3990.40
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 6144K
L4 cache: 131072K
NUMA node0 CPU(s): 0-7
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx
pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology
nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2
ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt
tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm cpuid_fault epb
invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid
fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid xsaveopt dtherm ida arat
pln pts md_clear flush_l1d
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: light-locker 1.8.0-1ubuntu1
ProcVersionSignature: Ubuntu 4.18.0-21.22~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-21-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: XFCE
Date: Sat Jun 15 15:50:29 2019
InstallationDate: Installed on 2019-06-13 (2 days ago)
InstallationMedia: Xubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64
(20190210)
SourcePackage: light-locker
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: light-locker (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1832960
Title:
Computer does not return from lock normally
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