Ubuntu
linux package

  1. Bug #872652
  2. Comment #7

Comment 7 for bug 872652

Revision history for this message
Joshua Rubin (rubixconsulting) wrote : Re: Display Hang With acpi_backlight=vendor

$ uname -a
Linux ironhide 3.1.0-999-generic #201110040905 SMP Tue Oct 4 09:10:44 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

$ cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.1.0-999-generic root=/dev/mapper/ironhide-root ro quiet splash acpi_backlight=vendor vt.handoff=7

$ xset s activate
Result: display turns off and does not resume until I close the lid, wait for system suspend and then open the lid for a system resume.

So the result is the same with both the RC and daily kernels. I will retry with each of them without the acpi_backlight=vendor option to ensure that it is still required to adjust the backlight and that the display hang issue is no longer present.