Bug 87091

Summary:	Toshiba nb550d screen does not turn on after hibernate or sometimes reboot
Product:	Power Management	Reporter:	Severin Wünsch (swuensch)
Component:	Hibernation/Suspend	Assignee:	Rafael J. Wysocki (rjw)
Status:	REJECTED INSUFFICIENT_DATA
Severity:	high	CC:	aaron.lu, alan
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	3.16.0-23-generic	Subsystem:
Regression:	No	Bisected commit-id:

Description Severin Wünsch 2014-10-28 15:41:43 UTC

I am currently using kernel 3.14.2-031402-generic on a Toshiba nb500d netbook where everything works.
But on kernel 3.16.0-23-generic (default on lubuntu 14.10) after standby the screen stays black I can heare the fan and and the disc spinning and all the leds behave like starting from standby.

How can I help fixing this bug. I also tried to boot with kernel linux-image-3.18.0-031800rc2-generic which did not work (some kind of errror).

Comment 1 Aaron Lu 2014-11-05 02:20:59 UTC

Sounds like a GPU issue. 
By standby, do you mean suspend to mem? After resume, possible to ssh to the netbook to check its dmesg?