[mythtv-users] Computer can't read EDID from Panasonic TC-P42C1

[gcsa60]

Thanks Jedi,

I have messed around with the settings in MythTV although they don't 
quite work as I intuit them. For example if I use the screen wizard and 
set it to 1024x768 it underscans. I still have to wok it out.

Anyway, I was still hoping to solve this problem though because I would 
like to use the computer as a desktop when I want. Has anyone 
encountered and solved this problem??



On 03/12/2013 10:39 AM, jedi wrote:
> On Tue, Mar 12, 2013 at 09:35:03AM -0700, Chris wrote:
>> Hello Everyone,
>      MythTV allows you to change the area of the screen that it
> renders the UI to. This allows you to adjust for overscan even
> if you can't get rid of it. This is the approach I have taken.
>
>> I have been asking this question on Linux Questions and I have
>> received some advice from one kind soul but nothing seems to be
>> working. I was thinking that people here might be more accustomed to
>> dealing with this type of issue.  Below is a cut and paste of my
>> original post on Linux questions.  If you follow the thread we've
>> tried the follow:
>>
>> 1) adding  "Modes    "1600x1200" "1280x1024" "1024x768" "800x600"
>> "640x480" to xorg.cong"
>> 2) removed and blacklisted the nouveau drivers
>> 3) update grub
>> 4) update the initramfs
>> 5) on my own I changed settings in the xorg.conf to HorizSync 15.73 - 67.5
>>      VertRefresh     23.98 - 60.00 based on information I got from my
>> manual.
>> 6) I also tried to create a new mode in xrandr that I got from
>> http://www.mythtv.org/wiki/Modeline_Database but no joy.
>>
>> As always thank you for any help you can provide.
>>
>> Chris
>>
>> _ORIGINAL QUESTION:_
>> I've just loaded Ubuntu 12.04 on a new(used) HTPC which I have
>> hooked up to a Panasonic TV (this is to be used as a MythTV
>> frontend). The TV's max resolution is 1024x768 but the option isn't
>> available in X-server or the Ubuntu display controls. It is
>> currently set at 1280x720 and subsequently the controls are not
>> completely visible on screen (overscan) making it very difficult to
>> work with.
>>
>> The output graphic controller is :NVIDIA Corporation C77 [GeForce
>> 8200] (rev a2) (I don't know if you need any more information).
>>
>> I tried the below (sorry I forgot how to get it into the little
>> scrollable box) taken from the following website
>> (http://ubuntuforums.org/showthread.p...ar#post8595940 <http://ubuntuforums.org/showthread.php?p=8595940&mode=linear#post8595940>)
>> but as you can see I came to a dead end.
>>
>> Any help anyone could provide would be greatly appreciated.
>>
>>
>> chris at HTPC-1:~$ xrandr
>> Screen 0: minimum 8 x 8, current 1280 x 720, maximum 8192 x 8192
>> VGA-0 disconnected (normal left inverted right x axis y axis)
>> HDMI-0 connected 1280x720+0+0 (normal left inverted right x axis y
>> axis) 698mm x 392mm
>> 1280x720 60.0*+ 59.9
>> 1920x1080 60.0 59.9 24.0 30.0 30.0
>> 1440x480 30.0
>> 720x480 59.9 30.0
>> 640x480 59.9
>> "1024x768_60.00" (0x280) 63.5MHz
>> h: width 1024 start 1072 end 1176 total 1328 skew 0 clock 47.8KHz
>> v: height 768 start 771 end 775 total 798 clock 59.9Hz
>> chris at HTPC-1:~$ cvt 1024 768
>> # 1024x768 59.92 Hz (CVT 0.79M3) hsync: 47.82 kHz; pclk: 63.50 MHz
>> Modeline "1024x768_60.00" 63.50 1024 1072 1176 1328 768 771 775 798
>> -hsync +vsync
>> chris at HTPC-1:~$ xrandr --newmode "1024x768_60.00" 63.50 1024 1072
>> 1176 1328 768 771 775 798 -hsync +vsyn
>> chris at HTPC-1:~$ xrandr --addmode HDMI-0 1024x768_60.00
>> X Error of failed request: BadMatch (invalid parameter attributes)
>> Major opcode of failed request: 140 (RANDR)
>> Minor opcode of failed request: 18 (RRAddOutputMode)
>> Serial number of failed request: 25
>> Current serial number in output stream: 26
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