Hello,
I'm new to this forum and to Linux in general, but not to computers at all.
So here is my problem and what I already tried to solve it.
I want to use a external monitor with my Linux laptop (OS is Debian, the monitor actually is a TV ).
The OS is working fine with the laptop, no resolution and/or text size problems. I actually can choose size and resolution as I want, and it works fine.
When I now plug in the external screen, it automatically detects the right resoltion and displays the screen 1:1 as I set in in the settings on my laptop. No problems so far.
However, If I restart now or plug the monitor in before I boot the laptop, then the resolution will also automatically be detected as I set it. Taskbar and icons also be the same size, but every text is shown as it was set to size 1. It is so tiny you can't read anything. The problem is, when I go to settings now, the resolution and text size etc is still untouched and didn't change, the only problem is the text size is shown very small, it is as small as this '.......' (yes only dots, but thats how small the size of the text actually look like )
When I try to change the resolution and text size, it won't affects the problem, all texts (including text of icons, text of windows, text of descriptions, text in the taskbar, every text is still as small as '.......' this.
When I unplug the monitor, the problem stays on, but if I reboot now after I unplugged it, this problem is gone.
Btw, the laptop has a SIS graphic card and a single core AMD cpu. It's an old, not my main machine.
I haven't find a similar problem so far, so I ask you people for help.
Thanks for any help and suggestions.
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Laptop + external monitor text size problem
Re: Laptop + external monitor text size problem
Open a Terminal and run
That will give you a guide as to your graphics monitors
For instance I get two sets of values, the first looks like
My actual preferred device is DVI-I-2 ... which is a 720p LCD 32 inch TV, which I prefer to have running at 1280x720 resolution (720p indicates 720 second value).
When I run
I get
Armed with the above I create a /etc/X11/xorg.conf file ... that looks like
Perhaps try replicating that process, changing the Identifier and Modeline values for your particular case and then see what that looks like when you login. If you black screen at restarting then Ctrl-Alt-F1 (or F2, F3 ....etc) to access another console, login in as root and rename or delete the /etc/X11/xorg.conf file. Note that you can have more than one of those sections with different values for each device, for instance I could add another duplicate of that, but with perhaps Identifier "DVI-I-1" .... with a different Modeline and PreferredMode values.
For general font size, sometimes I create a ~/.Xresources file containing
The Xft.dip: 120 is quite a large font size, many use a 96 or even 80 value. Again you have to logout/login for the changes to be applied.
I suspect your two graphics outputs are being set differently. In Debian Gnome for instance you can usually see (and change) those settings in Settings, Display. That (or whatever alternative for whichever Debian you're running) should really be your first stop before trying the above.
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xrandr
For instance I get two sets of values, the first looks like
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root@debian:/home/user# xrandr
Screen 0: minimum 320 x 200, current 1280 x 720, maximum 8192 x 8192
DVI-I-1 connected (normal left inverted right x axis y axis)
1024x768 60.00
800x600 60.32 56.25
848x480 60.00
640x480 59.94
.....
When I run
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cvt 1280 720
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root@debian:/home/user# cvt 1280 720
# 1280x720 59.86 Hz (CVT 0.92M9) hsync: 44.77 kHz; pclk: 74.50 MHz
Modeline "1280x720_60.00" 74.50 1280 1344 1472 1664 720 723 728 748 -hsync +vsync
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Section "Monitor"
Identifier "DVI-I-2"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
Modeline "1280x720_60.00" 74.50 1280 1344 1472 1664 720 723 728 748 -hsync +vsync
Option "PreferredMode" "1280x720_60.00"
EndSection
For general font size, sometimes I create a ~/.Xresources file containing
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! ~/.XResources
! Xft settings ---------------------------------------------------------
Xft.autohint: 0
Xft.antialias: 1
Xft.hinting: 1
Xft.hintstyle: hintslight
! Xft.hintstyle: hintfull
Xft.dpi: 120
Xft.rgba: rgb
Xft.lcdfilter: lcddefault
I suspect your two graphics outputs are being set differently. In Debian Gnome for instance you can usually see (and change) those settings in Settings, Display. That (or whatever alternative for whichever Debian you're running) should really be your first stop before trying the above.
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Re: Laptop + external monitor text size problem
This sounds like a DPI issue.DeBob wrote:However, If I restart now or plug the monitor in before I boot the laptop, then the resolution will also automatically be detected as I set it. Taskbar and icons also be the same size, but every text is shown as it was set to size 1. It is so tiny you can't read anything. The problem is, when I go to settings now, the resolution and text size etc is still untouched and didn't change, the only problem is the text size is shown very small, it is as small as this '.......' (yes only dots, but thats how small the size of the text actually look like )
When I try to change the resolution and text size, it won't affects the problem, all texts (including text of icons, text of windows, text of descriptions, text in the taskbar, every text is still as small as '.......' this.
Check with:
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xdpyinfo | grep dots > dpi.txt
deadbang