Hdmi

[Random20210831]

I own the SONY AV Receiver STR-DG720 with HQ sound. To connect laptop to it I use HDMI. But there was a problem. When I connect it with HDMI laptop screen on the laptop is switched to 640x480 instead of 1280x800 because cloning screens. I do not know how to handle this. In the display settings can not scroll, so I can not solve the problem.

[cortman]

Please wait 24 hours before bumping your thread.

Post the output of

xrandr

And I'll give you a quick easy fix that SHOULD work.

[Random20210831]

How to post output? xrandr only displays information about screens.

[cortman]

How to post output? xrandr only displays information about screens.

That is the information I am asking for.
Copy/paste it into your reply.
Are you really asking for support or just playing games?

[Random20210831]

I apologize. I did not understand you correctly.
That are the terminal log:
Screen 0: minimum 320 x 200, current 640 x 480, maximum 8192 x 8192
LVDS1 connected 640x480+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
1280x800 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 640x480+0+0 (normal left inverted right x axis y axis) 708mm x 398mm
1280x720 60.0 +
720x576 50.0
720x480 59.9
640x480 60.0*
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis).
Note: my laptop supports HDMI transfer in Full HD, but I am using HDMI for HD audio transfer to my AV reciever.

[cortman]

I apologize. I did not understand you correctly.
That are the terminal log:
Screen 0: minimum 320 x 200, current 640 x 480, maximum 8192 x 8192
LVDS1 connected 640x480+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
1280x800 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 640x480+0+0 (normal left inverted right x axis y axis) 708mm x 398mm
1280x720 60.0 +
720x576 50.0
720x480 59.9
640x480 60.0*
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis).
Note: my laptop supports HDMI transfer in Full HD, but I am using HDMI for HD audio transfer to my AV reciever.

OK, sounds good.
Just a tip- when you post code, put it between [CODE] blocks- you can get them from the editing toolbar in the response window.

Go ahead and run

xrandr --output LVDS1 --mode 1280x800

in a terminal. That should fix the resolution.