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I can't recover from the screen being off without resetting the laptop using the power button.
When I use the fn+volume keys while the screen is off I can hear the volume changing, I just can't find a way to get the screen to come back on.
I am using a Samsung Q45 laptop. I can pull any debug/system info and paste it in if someone tells me the commands to run.
Here is the link that crashes (crashes in both Firefox and Chromium):
www.google.com/chrome/browser
I suggest you look at the contents of the file /var/log/syslog Each line starts with a timestamp. Find the section that coincides with the time the screen goes blank and see if you can find any relevant entries. I experienced a similar problem and the entries in my syslog file started... (timestamps at start of each line removed for clarity)
[drm] stuck on render ring
[drm] GPU crash dump saved to /sys/class/drm/card0/error
[drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
I posted a bug report at freedesktop.org No fix yet but hopefully the bug report will help get it fixed.
I've posted a workaround at the duplicate question monitor goes blank opening google chrome download page, to at least download chrome via the command line.
