Hello everyone!
I?ve recently bought a new HTPC setup and ran into some issues with overscan/underscan using the newest 10.4 catalyst for linux. My previous card was from Nvidia so I?m lacking experience with ATI cards.
Almost every fix I?ve tried so far resulted in overscan or underscan.
Setting the underscan-slider to 0% gets me close to a perfect picture but there?s still a 1" black bar on the right of the screen a well as a 0.5" black bar on top of the screen.
After hours of trying I?ve finally found a method that will give me 100% flawless 1:1 pixel mapping? but it won?t stick through reboots.
I have to set the resolution to something below native 1080p (in my case I just used 1024x768), apply the resolution, change the Catalyst?s scaling options from "Display" to "GPU - Centered timings".
Once that is done I restore 1920x1080 and voil?, zero black bars, zero overscan.
Unfortunately this does not stick through reboots. Whenever I open the CCC after a reboot, the Scaling options have jumped back to "Display" instead of "GPU - Centered Timings".
Has anyone found a workaround for this?
I?m wondering if it would be viable to do all these steps via a shell script on every boot, but I haven?t yet figured out how to change the scaling mode through aticonfig instead of CCC (if that is possible at all?)
Using:
Fresh Ubuntu 10.04 installation with Catalyst 10.4
Radeon 5770
Pioneer Kuro KRP-600a Plasma connected via HDMI
I?ve recently bought a new HTPC setup and ran into some issues with overscan/underscan using the newest 10.4 catalyst for linux. My previous card was from Nvidia so I?m lacking experience with ATI cards.
Almost every fix I?ve tried so far resulted in overscan or underscan.
Setting the underscan-slider to 0% gets me close to a perfect picture but there?s still a 1" black bar on the right of the screen a well as a 0.5" black bar on top of the screen.
After hours of trying I?ve finally found a method that will give me 100% flawless 1:1 pixel mapping? but it won?t stick through reboots.
I have to set the resolution to something below native 1080p (in my case I just used 1024x768), apply the resolution, change the Catalyst?s scaling options from "Display" to "GPU - Centered timings".
Once that is done I restore 1920x1080 and voil?, zero black bars, zero overscan.
Unfortunately this does not stick through reboots. Whenever I open the CCC after a reboot, the Scaling options have jumped back to "Display" instead of "GPU - Centered Timings".
Has anyone found a workaround for this?
I?m wondering if it would be viable to do all these steps via a shell script on every boot, but I haven?t yet figured out how to change the scaling mode through aticonfig instead of CCC (if that is possible at all?)
Using:
Fresh Ubuntu 10.04 installation with Catalyst 10.4
Radeon 5770
Pioneer Kuro KRP-600a Plasma connected via HDMI
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