[mythtv-users] Weird HDMI problem
icicimov at gmail.com
Wed Apr 4 00:51:50 UTC 2012
> On Wed, Apr 4, 2012 at 6:34 AM, Calvin Harrigan <
> charriglists at bellsouth.net> wrote:
On 4/3/2012 3:38 PM, Nick Rout wrote:
>>> I've had similar problems related to this chicken, egg issue. I even
>>> had a
>>> problem with getting the audio over the HDMI cable because of an errant
>>> edid. Both were fixed with the same solution. Extract the edid from your
>>> tv, save it to a file. Instruct xorg to use the file for the TV info,
>>> negating the need to ask the TV directly. If the TV is off this will
>>> nothing, which will result in a blank screen when you finally turn on the
>>> TV. Detailed instructions can be found here:
>> Only works on nvidia AFAIK
>> Luckily for you, you won't have to edit the edid data, recalculate
>>> and the like. I had to do this to strip away the audio information
>>> by the TV, which prevented me using the TV the way I wanted to.
>>> Sorry, I forgot that critical piece of information. You did mention
> Might still be possible:
> Which driver are you using? fglrx or open source? The open source ones
> seem to work with the custom-edid opiton
> mythtv-users mailing list
> mythtv-users at mythtv.org
First thanks to everyone for your response and suggestions.
Unfortunately I use fglrx driver which doesn't have the CustomEDID option.
The option is supported by the radeon opensource driver but not by fglrx.
Sorry I missed to mention the fact I have the latest 12.2 Catalist driver
installed (hoping ATI will solve the problem so I keep up to date) which
I'm not sure is better than the radeon one but I get really smooth playback
in Mplayer with gl/gl2 video output so I'm not really ready to switch over.
I can also confirm that including Modline in the xorg.conf doesn't work as
pointed by Jean-Yves.
I found it best to disable DPMS power saving in xorg.conf:
> Section "ServerFlags"
> Option "BlankTime" "0" # default 10 mins
> Option "StandbyTime" "0" # DPMS standby, default 10 mins
> Option "SuspendTime" "0" # DPMS suspend, default 10 mins
> Option "OffTime" "0" # DPMS off, default 10 mins
Lawrence, I find your suggestions very interesting I can see you had
battled this problem before :) I have the ServerFlags section already
included in my xorg.conf but without any success. I have to check if I have
the correct options set as given above though.
This is almost certainly the ATI radeon driver disabling any
> disconnected outputs. I had the same problem with an analog TV
> connected to TVout. I fixed it by adding this to xorg.conf:
> Section "Device"
> # copy existing
> Option "ForceTVOut" "on"
> # The above is documented for the radeon driver
> # For fglrx use:
> Option "NoTV" "no"
I'm certainly going to try this option!
sudo xrandr --output HDMI1 --auto
This is exactly what I was looking for, a way to probe the HDMI output
without removing/inserting the cable!
Thanks again guys, I'll try the things suggested tonight and report back.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the mythtv-users