>>>>> When I was using an Nvidia video card, I noticed a strange sort of >>>>> fuzzy edge effect if I used nvidia-drivers. xf86-video-nouveau didn't >>>>> have the same problem. Now I've switched to an ATI video card and >>>>> unfortunately I have the same problem with xf86-video-ati. I tried to >>>>> enable the new modesetting radeon driver in the kernel to see if that >>>>> would help but it doesn't work with my HD4250 card yet. Does anyone >>>>> know how to fix this? Here's a photo of the effect around the mouse >>>>> cursor: >>>>> >>>>> http://imageshack.us/photo/my-images/804/cursor.jpg >>>>> >>>>> - Grant >>>>> >>>> >>>> Hi Grant, >>>> >>>> just a shot in the dark: >>>> The image looks to me as thos would be an analog instead of >>>> an digital problem. >>>> May be both propietary drivers switch to the highest possible >>>> data transfer rate and this triggers the problem. >>>> To check, whether this may be the problem: >>>> Instruct the driver to use either low resolution or low refresh >>>> rates. Check both. >>>> If the problem changes signifiently: Change the cables. >>>> May be only a pluf is not inserted correctly. >>>> Addtionally you can move the cables arround to see whether >>>> this will change the shadows around the cursor in any way... >>>> >>>> Good luck! :) >>>> Best regards >>>> mcc >>> >>> Thanks for that. I'm still working on it but adding radeon.audio=0 to >>> grub cleaned it up about 75%. >>> >>> - Grant >> >> It turns out the radeon.audio=0 setting disables HDMI data packets and >> puts the HDMI port in DVI mode. mcc, I'm starting to think you had it >> pretty right on. I've tried two different cables with the same result >> but I'm thinking this may be some sort of electrical interference >> issue. > > HDMI is digital, so there can be no interference. This looks more like a > driver bug.
I tried the latest git-sources-3.0 kernel with the same results. > Btw, why are you connecting to your monitor with HDMI? For computer > monitors, you use the DVI port, not HDMI. HDMI is for TVs. Unless of > course your monitor lacks a digital DVI port (DVI-I or DVI-D). If it only > has a DVI-A port, only then is HDMI the better solution. The monitor is actually a 47" LG HDTV. This is an HTPC. - Grant
