Asus M4a785-m and ntegrated ATI Radeon HD4200 output to 15" VGA Monitor and HDMI-TV

Mike McMullin mmcmullin at
Tue Oct 26 03:55:06 UTC 2010

On October 25, 2010 01:23:08 pm Luis Paulo wrote:
> On Mon, Oct 25, 2010 at 10:52, Tony Pursell <ajp at> 
> > On Mon, 2010-10-25 at 01:49 -0400, Mike McMullin wrote:
> >>   I've got a bud who installed 9.04 on his new system (critical details
> >> in subject line), and would like to be able to output to both his 15"
> >> monitor and HDMI TV, the screen looks almost fine on the 15", but the
> >> full desktop is not showing, and on the HDMI-TV you see the middle of
> >> the desktop with no upper or lower bars, is there a way to fix this so
> >> that the desktop is proper size on both the monitor and the TV?
> >>  (Driver file recommendations would be appreciated as well.)
> > 
> > The problem on your TV is due to what is called 'overscan' (Google it!).
> > TV manufacturers deliberately make the picture bigger than the screen so
> > you don’t seen the edges.  There is a standard for the position on the
> > screen that can always be seen so that things like subtitles are always
> > seen.
> > 
> > I am not sure how you cope with this for your graphics. On my Acer Revo,
> > with nVidia graphics, I can use the proprietary driver which gives a
> > menu entry for my Panasonic Viera TV with an option for Overscan
> > Correction.  AFAIK there is currently no proprietary driver for ATI
> > Radeon (like I have on my desktop PC) and I don't know about any GUI for
> > adjusting the parameters of Open Source drivers. Perhaps now I have
> > identified the problem, someone else will be able to help.
> > 
> > Tony
> Just to say that I configured recently my 10.10 with a ATI Radeon 4800
> to use an HDMI monitor.
> I had to set the samsung monitor to PC mode (TV/PC mode). And:
> * With xserver-xorg-video-radeon 1:6.13.1-1ubuntu5 driver it worked fine.
> * With fglrx 2:8.780-0ubuntu2 driver, I had to set overscan (had black
> borders all around)
> Using fglrx-amdcccle (ATI Catalyst Control Center (Administrative)),
> select Display Manager->your monitor->Adjustments Tab and set Scaling
> Options to 0%, it was ok then  [1].
> For the OP: Hope this may help. You may be doing two questions:
> Setting for an HDMI monitor and Setting dual displays.
> If I'm correct, I ask you to tell us if you can set your image on your
> HDMI monitor, using only that monitor.

  IIRC, no (not my system but a friends), the 15" VGA also has display 
> If so, then try both displays. As I remember, setting the same image
> in 2 monitors with different resolutions may not be that out of the
> box.

  Is that not that out of the box, as in possible, or not that out of the box 
as in not normally intended for the software to do?

> Regards
> Luis
> [1] I also set my DPI settings on
> System->Preferences->Appearance->Fonts Tab->Details ... Button on
> resolution to 102dpi in my case.
> dpi stands for dots per inch, and you can get that number from your
> Xorg.0.log or by dividing your H resolution by your monitor horizontal
> width in inchs.
> The smoothing settings on the same tab may also improve your image.

More information about the ubuntu-users mailing list