Created attachment 37121 [details] [review] xorg log Hi, Parts of the screen are displayed outside the visible area on my LCD TV using the HDMI output on my Radeon HD4550. In some modes I can see half the top menu bar. In other modes it's completely off the screen. I have tested with: radeon driver radeonhd driver Fedora 13 stock kernel 2.6.33.4-95.fc13.x86_64 kernel 2.6.34.1 kernel 2.6.35-rc5 nomodeset boot parameter They all give the same output. The driver also has trouble finding valid modelines. I can force it into higher resolutions with modelines I got from windows with powerstrip but they also display the borders of my desktop outside the visible area. Changing the resolution takes almost 30 before an image is displayed on the TV. Which would indicate the TV has a hard time understanding the Radeon output. regards, Martin
Created attachment 37122 [details] xorg.conf
Created attachment 37124 [details] dmesg
Many HDMI TV's overscan the incoming image. You need to disable the overscan in your TV's config (select "fit" or "just" mode for example).
Ah! Now I feel stupid... I guess windows is sending a ddc/ci command to make the TV disable the overscan. Is there a simple way to do this in linux? Adjusting the TV config made it a lot better but not perfect. If found ddccontrol but it's from 2006 and doesn't compile on Fedora 13. Thanks!/martin > From: bugzilla-daemon@freedesktop.org > To: u.martin.andersson@hotmail.com > Subject: [Bug 29107] bad HDMI output on Radeon HD4550 > Date: Fri, 16 Jul 2010 06:43:50 -0700 > > https://bugs.freedesktop.org/show_bug.cgi?id=29107 > > --- Comment #3 from Alex Deucher <agd5f@yahoo.com> 2010-07-16 06:43:49 PDT --- > Many HDMI TV's overscan the incoming image. You need to disable the overscan > in your TV's config (select "fit" or "just" mode for example). > > -- > Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You reported the bug. _________________________________________________________________ Klicka här! http://explore.live.com/windows-live-hotmail
(In reply to comment #4) > Ah! Now I feel stupid... > I guess windows is sending a ddc/ci command to make the TV disable the > overscan. > Is there a simple way to do this in linux? Adjusting the TV config made it a > lot better but not perfect. The windows driver makes adjustments to the modeline to compensate for the overscan. The open source driver does not do that at the moment.
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