Review your favorite Linux distribution.
Go Back > Forums > Linux Forums > Linux - Hardware
User Name
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


  Search this Thread
Old 04-25-2003, 04:25 PM   #1
LQ Newbie
Registered: Apr 2003
Posts: 1

Rep: Reputation: 0
Radeon 7500 TV-out problems

I'm having problems with my Radeon 7500 TV-out. If I boot with the S-video cable disconnected there seems to be no way to activate the tv-out (I tried atitvout, it did nothing but tell me that I have no tv-out ). If I boot with the cable connected all works fine but X won't start (in short it says "no screens found"). Cable being connected at boot atitvout finds my tv-out and tells me it's on, but still I can't affect to it with atitvout.

Now the real problem is, that I can't get mplayer to play any movies without X. I tried all the video-out devices that "mplayer -vo help" gives me, but none of them works.

Anyone who knows how to solve my problem (that is to get the tv-out to work, if under X the better) please help me.
Old 05-29-2003, 02:44 PM   #2
LQ Newbie
Registered: May 2003
Distribution: SuSE 8.1
Posts: 3

Rep: Reputation: 0
Yesterday evening I was at the same point as you. Today I'm one step further. I was able to start X after using the vesa driver. I did it with sax2:

sax2 -m 0=vesa

This allowed me to configure an 800x600x60Hz mode. (Maybe other modes are possible, I admit I didn't try).

Unfortunately the vesa driver cannot make use of any hardware accelleration features of the radeon card, e.g. hardware zoom for fullscreen playback. You can use software scaling with

mplayer -vop scale -zoom <file>

but my system (AMD K6-2 500MHz) is too slow for that. mplayer drops frames then and the movie playback is not smooth. And of course, the 60Hz refresh rate limits the use of this mode to watching movies on TV.

That's why I created two XF86Config files (one for watching TV and one for working) and modified /etc/init.d/xdm to copy the right one into place, depending on if atitvout shows the TV out or not:

case "$1" in
# Is TV-Out active?
if /usr/local/sbin/atitvout detect | grep -q TV; then
echo -n "Starting service $DM (with TV-Out)"
cp /etc/X11/XF86Config.tvout /etc/X11/XF86Config
echo -n "Starting service $DM (no TV-Out)"
cp /etc/X11/XF86Config.notv /etc/X11/XF86Config

So if I have plugged in the TV, the system comes up with vesa 800x600x60 mode, if not, radeon 1024x768 is used.

BTW, how is your TV display quality? For watching movies it is ok, but text is not readable.

I don't know why the radeon driver cannot set up the same display mode as vesa does. I'm still trying to find out.
Old 05-30-2003, 03:52 PM   #3
LQ Newbie
Registered: May 2003
Distribution: SuSE 8.1
Posts: 3

Rep: Reputation: 0
Some more results from my further testings:

I was able to set a resolution of 1024x768 for the monitor with sax2 when using the vesa driver. The card seems to scale that down to 800x600 for the TV automatically. But the refresh rate is still at flickering 60Hz. I didn't find how to change this.

I can start mplayer from the console (without X). According to the mplayer stdout it uses sdl per default, which seems to be the best matching driver. I also could choose directfb, fbdev, but these didn't seem to support scaling to full screen.

I realized that the movies play much smoother in fullscreen without X so I guess I'll prefer playing this way, since 60Hz is a real pain for the eyes.
Old 09-12-2003, 12:54 PM   #4
LQ Newbie
Registered: Aug 2003
Location: Cambridge, ON
Distribution: RedHat
Posts: 1

Rep: Reputation: 0
I have a similar issue with a Radeon 7500. Does anyone have an XF86Config file that will allow tvout to work?


Old 09-22-2003, 12:16 PM   #5
LQ Newbie
Registered: Apr 2002
Location: Texas
Distribution: Slackware 8.0, RH 7.1
Posts: 6

Rep: Reputation: 0
Heh... This is the only thing keeping me from using *nix exclusively. If someone has a XF86Config for this or perhaps even a link that could clue me in...

Old 10-09-2003, 12:21 AM   #6
LQ Newbie
Registered: Sep 2003
Location: Redmond, WA
Distribution: Mandrake 10.0, Mandrake 10.1
Posts: 12

Rep: Reputation: 0
some more info on this here

apparently the server doesn't find any valid modes for the tv-out so it can't set up a clone display which is why the error (no valid screens) comes up.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
ATI Radeon 7500 Mobility + Linux = Problems DaCapn Linux - Laptop and Netbook 2 03-27-2005 09:25 PM
XF86Config and Radeon 7500 M7 catfishk Linux - Hardware 14 03-30-2004 04:22 PM
Mandrake 9.1 PPC On An iBook w/ Radeon 7500 !!PROBLEMS!! Sicks Linux - Laptop and Netbook 6 12-24-2003 10:59 AM
video color depth problems with Radeon 7500 LE linuxnut2003 Linux - Newbie 5 12-04-2003 07:38 PM
dual monitor setup radeon 7500 problems general4172 Linux - Hardware 2 10-11-2003 01:20 AM > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 01:58 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration