Re: PROBLEM: [Toshiba Portege Z835] Brightness control lost after suspend

On 1 August 2014 03:42, Aaron Lu [off-list ref] wrote:

A workaround from user space is to specify the backlight interface you
want to use in xorg.conf, an example is here:
https://bugs.debian.org/cgi-bin/bugreport.cgi?msg=78;att=0;bug=651741

Section "Device"
Identifier  "Intel Graphics"
Driver      "intel"
Option      "AccelMethod"     "sna"
Option      "Backlight" "intel_backlight"
Driver      "intel"
BusID       "PCI:0:2:0"
EndSection

Thank you.  This works both in v3.16-rc and in the current Ubuntu
14.04 latest update.  Now user-interface brightness controls work
before AND after a suspend.  The only difference in the user
experience is that now minimum brightness on the brightness sliders
gives a completely dark screen rather than just a very dimly lit
screen.  I can live with this.

I'm guessing this should be regarded as a work-round rather than a
final solution that might eventually form part of the kernel.  Should
I report it as such back in the downstream Ubuntu/Launchpad bug?

If in future, when this is addressed in the kernel, further testing is
required please let me know.  I'd be happy to assist.

Thank you for your help,

John Marsden