Comment 35 for bug 95444
Revision history for this message
| Hans (hans-eichbaum) wrote Re: No Screen Backlight Control; Sony Vaio with nvidia 8 series graphics | #35 |
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(Get the code!)
I have a Vaio VGN-SZ71MN/B. This Vaio has 2 graphic cards, controlable with a switch that says stamina / speed.
When I select 'stamina' the Intel G965 is used and I have nicely brightness control with xbacklight after using the xrandr trick. When I select 'speed' the Nvidia Geforce 8 card is used and I have no brightness control.
I have read lots about the Nvidia brightness control problems with Vaio's and wondering now the following. If the brightness control is just controllable via a register, why is it any different for the Nvidia? Or in other words, is it really just a register?
Like others I have observed occasionally flickering when using the Nvidia card, might this be related to the brightness control? has it been deliberately disabled due to this flickering problem (it might be worse when controlling the brightness leds)??