Jesus Sanchez wrote: > Hi, using 4.5 stable. > > I'm doing some tests with the VESA driver on a HP nx9030 (a laptop) and > I noticed a little flicker on the screen when I'm using the VESA > driver so I wanted to see the refresh rate the computer is sending to > the LCD screen and xrandr reported: > 1024 x 768 0.0
not overly suprising, the VESA driver is about getting dots on the screen, not tweaking every register in the graphics chip. I also don't know that it is supporting xrandr. > while with the "intel" driver for the card xrandr reported > 1024 x 768 60.0 > > Is there anyway to see the refresh rate the LCD screen is recieving? > It's a laptop so it don't have any control panel or buttons to interact > directly with the LCD screen. it doesn't need them, either. normally, the video chip will interface directly to the LCD, it won't be doing multiple conversions that all the control panel buttons are there to help with. LCD screens don't "refresh" in a way that is directly comparable to CRTs. Any numbers you see reflect the the data rate between the CRTC and the LCD hardware, not how data is displayed on the LCD...and on a laptop, even that is probably mostly fiction. If you are seeing flicker on the LCD screen, it is something OTHER than the CRTC's refresh rate... unfortunately, some of them could be hardware problems. Nick.
