[Intel-gfx] Garbage on screen when switching resolution after BIOS post

2011-10-04 Thread meteor
We are developing a Linux solution. Our platform is using Intel SandyBridge and its VGA (kernel 2.6.35.8, 915 KMS driver). We found system will show garbage at the moment VGA is hand over to OS after BIOS POST. The symptom doesn’t happen in WIN 7. After checking with EE, the LCD_VDD_EN pin is

Re: [Intel-gfx] Garbage on screen when switching resolution after BIOS post

2011-10-04 Thread Daniel Vetter
On Tue, Oct 04, 2011 at 05:53:08PM +0800, meteor wrote: We are developing a Linux solution. Our platform is using Intel SandyBridge and its VGA (kernel 2.6.35.8, 915 KMS driver). We found system will show garbage at the moment VGA is hand over to OS after BIOS POST. The symptom doesn’t

Re: [Intel-gfx] Garbage on screen when switching resolution after BIOS post

2011-10-04 Thread Keith Packard
On Tue, 4 Oct 2011 17:53:08 +0800, meteor met...@ms1.url.com.tw wrote: Please refer to the VDD power monitoring image: http://imageshack.us/photo/my-images/827/auoi.jpg/ Nice picture. As Daniel mentioned, you'll want to try my eDP power sequencing changes and see what they do. I'm not sure