Acontece com um Vostro 3550, Debian, Gnome e uma televisão Philips 1080p.
Assim que eu conecto o HDMI, ele começa a alternar a saída e vai do espelho para a tela do laptop, apenas para a TV, para conjugado em intervalos de 15 segundos a 5 minutos.
O comando Fn + F1 e o separador de visualização alteram-no, apenas para que continue a acontecer.
Também devo mencionar que a TV muda de 1080p e uma imagem mais contrastada com menos qualidade ao longo desta alternância.
xrandr
>Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
LVDS1 connected (normal left inverted right x axis y axis)
1366x768 60.0 + 40.1
1360x768 59.8 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 640mm x 360mm
1920x1080 60.0*+ 50.0 30.0 25.0 30.0 25.0 24.0
1280x1024 60.0
1360x768 59.8
1280x720 60.0 50.0
1440x576 25.0
1024x768 60.0
1440x480 30.0
800x600 60.3
720x576 50.0
720x480 59.9
640x480 60.0 59.9
DP1 disconnected (normal left inverted right x axis y axis)
depois
xrandr --output LVDS1 --mode 1360x768 --output HDMI1 --same-as LVDS1
Screen 0: minimum 320 x 200, current 1360 x 768, maximum 8192 x 8192
LVDS1 connected 1360x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
1366x768 60.0 + 40.1
1360x768 59.8* 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1360x768+0+0 (normal left inverted right x axis y axis) 640mm x 360mm
1920x1080 60.0 + 50.0 30.0 25.0 30.0 25.0 24.0
1280x1024 60.0
1360x768 59.8*
1280x720 60.0 50.0
1440x576 25.0
1024x768 60.0
1440x480 30.0
800x600 60.3
720x576 50.0
720x480 59.9
640x480 60.0 59.9
DP1 disconnected (normal left inverted right x axis y axis)
Eu tentei parar udev
no caso que estava causando o toggling:
root@mach:/home/rt# sudo service udev stop
[ ok ] Stopping the hotplug events dispatcher: udevd.
root@mach:/home/rt# xrandr
Screen 0: minimum 320 x 200, current 3286 x 1080, maximum 8192 x 8192
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
1366x768 60.0*+ 40.1
1360x768 59.8 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1920x1080+1366+0 (normal left inverted right x axis y axis) 640mm x 360mm
1920x1080 60.0*+ 50.0 30.0 25.0 30.0 25.0 24.0
1280x1024 60.0
1360x768 59.8
1280x720 60.0 50.0
1440x576 25.0
1024x768 60.0
1440x480 30.0
800x600 60.3
720x576 50.0
720x480 59.9
640x480 60.0 59.9
DP1 disconnected (normal left inverted right x axis y axis)
Tags debian display-settings