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fincoop
Tux's lil' helper
Joined: 02 Feb 2004
Posts: 147
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 Posted: Sat Jul 14, 2012 7:47 pm Post subject: Console display is off the screen (LCD) |
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Hello,
On my locally attached LCD screen, the left-most character (1) is truncated. Is there a way to fix or troubleshoot this? My screen is connected via VGA. |
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54808
Location: 56N 3W
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| Posted: Sat Jul 14, 2012 8:15 pm Post subject: |
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fincoop,
The best way is to not use the VGA video link. If the display and video card both support a digital standard, like DVI or HDMI, invest in a cable.
That will cut out the digital to analogue conversion on the video card and the analogue to digital conversion in the display, so you get a much better picture.
Next choice is the displays autotune feature, if it has one.
Third choice is xvidtune to derive a custom modeline for your system. When run as root, xvidtune allows you to alter the video timeing as you watch. Compatibility with video cards varies. Note that some parameters only have visible effects in steps of 8. Thats a video card feature.
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Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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fincoop
Tux's lil' helper
Joined: 02 Feb 2004
Posts: 147
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| Posted: Mon Jul 16, 2012 7:45 pm Post subject: |
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| NeddySeagoon wrote: | fincoop,
The best way is to not use the VGA video link. If the display and video card both support a digital standard, like DVI or HDMI, invest in a cable.
That will cut out the digital to analogue conversion on the video card and the analogue to digital conversion in the display, so you get a much better picture.
Next choice is the displays autotune feature, if it has one.
Third choice is xvidtune to derive a custom modeline for your system. When run as root, xvidtune allows you to alter the video timeing as you watch. Compatibility with video cards varies. Note that some parameters only have visible effects in steps of 8. Thats a video card feature. |
Thanks for your help! I should clarify: I have KVM switch, and it only supports VGA. The server also only supports VGA. Autotune doesn't have an effect. This is the framebuffer console only, not X. Not sure you can use xvidtune with framebuffer?
Any other suggestions? |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Mon Jul 16, 2012 7:50 pm Post subject: |
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| You could try forcing a CVT video timing by passing an appropriate video= on the kernel command line. The default is to do whatever the EDID says which depends on that being available at boot time. |
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