[mythtv-users] OSD fonts badly rendered on a 16:9 TV

[Michael T. Dean]

On 10/03/2007 11:27 AM, Nicolas Will wrote:
> On Wed, 2007-10-03 at 11:08 -0400, Michael T. Dean wrote:
>   
>> On 10/03/2007 09:28 AM, Nicolas Will wrote:
>>     
>>> I run Ubuntu Gutsy (7.10)with the latest updates at this date, on
>>> x86_64, with MythTV, which means I am practically running Mythbuntu.
>>> MythTV is at version 0.20.2
>>>
>>> It is connected to an HDTV using DVI/HDMI and is running at 1920x1080.
>>>
>>> I am currently using an NVIDIA card using the Ubuntu nvidia-glx (driver
>>> version 1.0--9639). The problem existed as well when using an Intel GPU
>>> in the same machine (2.0 then 2.1.1 drivers).
>>>
>>> The display is set hard to 100dpi in xorg using Option "UseEdidDpi"
>>> "FALSE" in the Monitor Section of xorg.conf.
>>> In /var/log/Xorg.o.log:
>>>
>>> (**) NVIDIA(0): DPI set to (100, 100); computed from "DPI" X config
>>> option
>>>
>>> All the normal theme stuff (general menus, EPG, etc...) is displaying
>>> great.
>>>
>>> BUT -- All the OSD, when watching 16:9 TV programming, has fonts
>>> rendered badly, with weird aspect ratios and character overlaps. This is
>>> for the OSD menu, the program information, the volume setting, position,
>>> etc...
>>>
>>> I tried many different OSD themes with the same results.
>>>
>>> I made a few snapshots of how it looks like. They are available here:
>>>
>>> http://www.youplala.net/~will/htpc/bad_fonts/
>>>
>>> Any info/dumps/logs/confs can be provided quickly upon request.
>>> More info about the complete setup there:
>>> http://www.youplala.net/linux/home-theater-pc/
>>>
>>> Any help regarding this would be gladly accepted.
>>>       
>> Does your system show Xinerama enabled?  If so, are you only using one
>> monitor?  (I.e. do you see settings "Xinerama screen" and "Monitor
>> Aspect Ratio" in the "Screen settings" section of the frontend settings
>> under, I think, "Appearance settings"?)
>>
>> With new versions of X on recent distributions, X tends to report
>> Xinerama as enabled even when it shouldn't.  There's code in Myth that
>> handles aspect ratio calculations specially when Xinerama is enabled,
>> and if it's not enabled (but X reports it as enabled), these settings
>> (which only appear/are used when X says Xinerama is enabled) tend to
>> provide information that overrides a proper X configuration--often
>> resulting in font and/or video sizing issues.
>>
>> If you have such an X install, you'll have to specify the proper
>> Xinerama aspect info, too.
> Michael,
>
> No Xinerama at all.
>
> None configured in xorg.conf, none reported in Xorg.0.log.
>
> For completeness, I have posted both files there:
>
> http://www.youplala.net/~will/htpc/bad_fonts/
>
> Thanks for looking at my issue.

Whether you configure it or whether Xorg.0.log reports it is
irrelevant.  What is relevant is whether X tells Myth it's configured. 
The easiest way to find out for sure is to look for the specific
settings I mentioned above.  If they do not exist, the Xinerama issue is
not the problem.  If they do exist, it's almost definitely the problem.

Mike