Bug#437332: xserver-xorg-video-ati: Failed to detect secondary monitor, MergedFB/Clone mode disabled

[Alberto Mardegan <mardy.tardi@gmail.com>]

Brice Goglin wrote:
> Could you send the output of xrandr --verbose with this driver? (make
> sure you have xbase-clients 7.2 installed).

Here it is:

==========================
Screen 0: minimum 320 x 200, current 1280 x 800, maximum 1600 x 1200
VGA-1 disconnected (normal left inverted right)
	Identifier: 0x44
	Timestamp:  1487499692
	Subpixel:   no subpixels
	Clones:
	CRTCs:      0 1
LVDS connected 1280x800+0+0 normal (normal left inverted right) 0mm x 0mm
	Identifier: 0x45
	Timestamp:  1487499692
	Subpixel:   horizontal rgb
	Clones:
	CRTC:       0
	CRTCs:      0
		scaler: fill
	backlight: 255 (0x00000000) range:  (0,255)
  1280x800 (0x47)   68.9MHz
        h: width  1280 start 1296 end 1344 total 1408 skew    0 clock 
 49.0KHz
        v: height  800 start  801 end  804 total  816           clock 
 60.0Hz
  1280x800 (0x48)   83.5MHz
        h: width  1280 start 1344 end 1480 total 1680 skew    0 clock 
 49.7KHz
        v: height  800 start  801 end  804 total  828           clock 
 60.0Hz
  1280x768 (0x49)   80.1MHz
        h: width  1280 start 1344 end 1480 total 1680 skew    0 clock 
 47.7KHz
        v: height  768 start  769 end  772 total  795           clock 
 60.0Hz
  1024x768 (0x4a)   68.9MHz
        h: width  1024 start 1296 end 1344 total 1408 skew    0 clock 
 49.0KHz
        v: height  768 start  801 end  804 total  816           clock 
 60.0Hz
  1024x768 (0x4b)   65.0MHz
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock 
 48.4KHz
        v: height  768 start  771 end  777 total  806           clock 
 60.0Hz
  800x600 (0x4c)   68.9MHz
        h: width   800 start 1296 end 1344 total 1408 skew    0 clock 
 49.0KHz
        v: height  600 start  801 end  804 total  816           clock 
 60.0Hz
  800x600 (0x4d)   40.0MHz
        h: width   800 start  840 end  968 total 1056 skew    0 clock 
 37.9KHz
        v: height  600 start  601 end  605 total  628           clock 
 60.3Hz
  640x480 (0x4e)   25.2MHz
        h: width   640 start  656 end  752 total  800 skew    0 clock 
 31.5KHz
        v: height  480 start  490 end  492 total  525           clock 
 59.9Hz
S-video disconnected (normal left inverted right)
	Identifier: 0x46
	Timestamp:  1487499692
	Subpixel:   no subpixels
	Clones:
	CRTCs:      0 1
		tv_standard: default
	tv_vertical_position: 0 (0x00000000) range:  (-5,5)
	tv_horizontal_position: 0 (0x00000000) range:  (-5,5)
	tv_horizontal_size: 0 (0x00000000) range:  (-5,5)
==========================

> > (II) RADEON(0): Output VGA-1 disconnected
> > (II) RADEON(0): Output LVDS connected
> > (II) RADEON(0): Output S-video disconnected
> > (II) RADEON(0): Output LVDS using initial mode 1280x800
>
> But it does not see that VGA-1 is connected. I hope it's not caused by
> your not behaving as a real monitor (that's why I asked earlier whether
> you could try with a real monitor). Or it could be a problem with the
> connector table.

Mmm... I don't know, but anyway the fglrx driver had the TV working, and 
could detect the brand name (Samsung) and two supported modes, 1360x768 
and 1024x768 (though of course it has many more, maybe these are just 
the preferred ones).
Also, if while in console mode I press Fn+F4 (that is the key 
combination that should send the output to the external TV) I can see 
the console on the TV.

> Does it help if you do something like this?
>   xrandr --addmode VGA-1 800x600

This fails, there is no "--addmode" option (I have xbase-clients 
1:7.2.ds2-2).

>   xrandr --output VGA-1 --mode 800x600

And this cannot find the mode, maybe because the previous command failed.

> I'll see with Alex Deucher who wrote this code, he might have an idea.

Thank your time!

--
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