I am currently facing a problem on my laptop (an ASUS K53TA). The LVDS display is blank (no backlight) after suspending and resuming.
On Windows, using AMD's Catalyst driver the display is still active after suspend and resume, so the problem occurs only in Linux.
I am running Arch Linux 64 bit , with Linux kernel 3.13.6. I have filed a bug report already: https://bugs.freedesktop.org/show_bug.cgi?id=42960
I have faced this problem since Linux kernel 3.2 , so as far as I know it is not a regression.
I had used AMD's Catalyst drivers for some time, and the same problem had occurred with those drivers as well, but the problem was fixed in later versions of the Catalyst driver.
I want to figure out why this problem occurs and find a permanent fix.
Could someone please tell me if the GPU driver is the only code responsible for bringing up the display, or are other parts of the kernel involved as well? How would I begin to debug this issue?
Thanks in advance, Sandeep