Ubuntu
xserver-xorg-video-nouveau package

  1. Bug #921321
  2. Comment #66

Comment 66 for bug 921321

Revision history for this message
In , Jeff Miller (jefferym) wrote :

I have an NVAC (MCP79) in an iMac9,1 for which the backlight controls do not work if NV50_PDISP_SOR_PWM_DIV(0x61c080) is set to 0x5e. If it is useful at all I have attached an mmiotrace dump with from various backlight control setting changes using the nvidia blob in another bug report (#98677).