Ubuntu
linux package

  1. Bug #776999
  2. Comment #86

Comment 86 for bug 776999

Revision history for this message
jz (syed-zaib) wrote :

This problem still Presist in Ubuntu 14.04 (fully updated as of today). I have Lenovo W520 running Ubuntu 14.04 and NVIDIA Corporation GF108GLM [Quadro 1000M]. Anything that tries to change brightness can freeze the system, but only if running in Discrete Graphics Mode (in BIOS). I need Discrete mode to run multi-monitor setup.

Workaround I am currently using successfully is to disable Vt-d through bios (as others suggested). But this is limiting my system's capability to effectively utilize visualization technologies.

Please fix this. (Please let me know if I can be of any help in this regard).