Since upgrading (zypper dup) from 42.2 to 42.3 I am unable to resume properly from either suspend or hibernation. I return to a black screen with mouse cursor only. Keyboard is unresponsive, as is mouse. The only recourse I have found is reboot via front panel reset button of desktop.
Not sure if following is relevant, from SystemD Journal via YaST:
Starting Load/Save Screen Backlight Brightness of backlight:acpi_video0…
Failed to get backlight or LED device ‘backlight:acpi_video0’: No such device systemd-backlight@backlight:acpi_video0.service: Main process exited, code=exited, status=1/FAILURE
Failed to start Load/Save Screen Backlight Brightness of backlight:acpi_video0. systemd-backlight@backlight:acpi_video0.service: Unit entered failed state. systemd-backlight@backlight:acpi_video0.service: Failed with result ‘exit-code’.
[system] Activating service name=‘org.kde.powerdevil.backlighthelper’ (using servicehelper)
powerdevil: no kernel backlight interface found
QDBusArgument: read from a write-only object
QDBusArgument: read from a write-only object
QDBusArgument: read from a write-only object
[system] Successfully activated service ‘org.kde.powerdevil.backlighthelper’
It’s not a laptop, but a desktop build (no specific manufacturer). It has been upgraded several times since initial build, which was 13.1 version (/var/log/zypp/history).
Thanks very much for all your help with this. I’m going to sign off for the night and will check back tomorrow. Take whatever time you (and anyone else) need, this isn’t a major obstacle to my use of the system.
I don’t have a definitive answer here, but since you report that the same hardware is working with Leap 42.2 it could well be due to a kernel regression. Now you could try installing a stable kernel via the stable kernel repo, but you might be wise just to test a live distro (using a later kernel) first perhaps eg http://geckolinux.github.io/#download-rolling
I can confirm the issue with the same circumstances.
Same zypper dup upgrade from 42.2 -> 42.3. Acer Aspire V3-572/V3-532 series. Stock repositories, KDE, no Nvidia blobs.
I upgraded tonight to kernel 4.4.90-28-default but experienced the same issue when resuming from suspend. I then rebooted and chose Advanced Options at the grub boot GUI. I tried the available kernels previous to 4.4.87-25-default which is the kernel version I opened this issue for.
4.4.79-18.29-default worked fine.
4.4.79-18.26-default worked fine.
4.4.79-18.23-default worked fine.
Since 4.4.79-18.29 is the latest to work okay I went with it for now. Since this is a home machine that I normally suspend that works fine until a newer kernel that addresses/fixes the issue is released. It does seem you are correct on kernel regression.