Comments on: Searching for signal… 3 ways to get your external VGA working http://www.fabianrodriguez.com/blog/2007/05/11/searching-for-signal-3-ways-to-get-your-external-vga-working/ Me, myself and I Sat, 27 Feb 2010 15:43:25 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: alfem http://www.fabianrodriguez.com/blog/2007/05/11/searching-for-signal-3-ways-to-get-your-external-vga-working/comment-page-1/#comment-429 alfem Wed, 16 May 2007 08:41:16 +0000 http://www.fabianrodriguez.com/blog/archives/2007/05/11/searching-for-signal-3-ways-to-get-your-external-vga-working/#comment-429 I remember the stressing situation in the Guadalinex presentation at UDS. We started with a big wide-screen Sony Vaio but nothing seemed to work (neither reboot). I spent a few hours learning how to configure my little Vaio TX. It's a bit tricky, but you can use different resolutions in both lcd and external vga. I forgot to save my X.org scripts before reinstalling Guadalinex, so I lost this nice configuration. Luckily I brought an old Compaq EVO with me, that worked perfectly after a reboot. Anyway I agree with Fabian. If you plan to show a presentation, get prepared for Murphy law effects ! I remember the stressing situation in the Guadalinex presentation at UDS.

We started with a big wide-screen Sony Vaio but nothing seemed to work (neither reboot).

I spent a few hours learning how to configure my little Vaio TX. It’s a bit tricky, but you can use different resolutions in both lcd and external vga.
I forgot to save my X.org scripts before reinstalling Guadalinex, so I lost this nice configuration.

Luckily I brought an old Compaq EVO with me, that worked perfectly after a reboot.

Anyway I agree with Fabian. If you plan to show a presentation, get prepared for Murphy law effects !

]]> By: effie_jayx http://www.fabianrodriguez.com/blog/2007/05/11/searching-for-signal-3-ways-to-get-your-external-vga-working/comment-page-1/#comment-431 effie_jayx Fri, 11 May 2007 14:18:41 +0000 http://www.fabianrodriguez.com/blog/archives/2007/05/11/searching-for-signal-3-ways-to-get-your-external-vga-working/#comment-431 one could also restart X only ctrl + alt + backspace works like a charm ;) one could also restart X only

ctrl + alt + backspace

works like a charm ;)

]]> By: Lon http://www.fabianrodriguez.com/blog/2007/05/11/searching-for-signal-3-ways-to-get-your-external-vga-working/comment-page-1/#comment-430 Lon Fri, 11 May 2007 13:08:29 +0000 http://www.fabianrodriguez.com/blog/archives/2007/05/11/searching-for-signal-3-ways-to-get-your-external-vga-working/#comment-430 If you use the fglrx drivers you may also consider to force crt1 on all the time: "aticonfig --force-monitor=crt1", so you wont have to use "enable-monotor" every time you need it. If you use the fglrx drivers you may also consider to force crt1 on all the time: “aticonfig –force-monitor=crt1″, so you wont have to use “enable-monotor” every time you need it.

]]> By: EtienneG http://www.fabianrodriguez.com/blog/2007/05/11/searching-for-signal-3-ways-to-get-your-external-vga-working/comment-page-1/#comment-432 EtienneG Fri, 11 May 2007 12:43:31 +0000 http://www.fabianrodriguez.com/blog/archives/2007/05/11/searching-for-signal-3-ways-to-get-your-external-vga-working/#comment-432 <blockquote>Of course here at UDS you can just grab <b>Etienne</b> or me :)</blockquote> <a href="http://www.thinkgeek.com/tshirts/frustrations/388b/" rel="nofollow">No, I will not fix your computer</a>

Of course here at UDS you can just grab Etienne or me :)

No, I will not fix your computer

]]> By: Carsten Aulbert http://www.fabianrodriguez.com/blog/2007/05/11/searching-for-signal-3-ways-to-get-your-external-vga-working/comment-page-1/#comment-433 Carsten Aulbert Fri, 11 May 2007 10:59:14 +0000 http://www.fabianrodriguez.com/blog/archives/2007/05/11/searching-for-signal-3-ways-to-get-your-external-vga-working/#comment-433 The following two things usually help a lot if you are running the curs^Wnice fglrx drivers from ATI^WAMD: sudo aticonfig --enable-monitor=lvds,crt1 enables the second display on my Thinkpad, while sudo aticonfig --enable-monitor=lvds,none disables it again. If you happen to have problems with the wrong resolution, try the xrandr tool (found in the package with the same name). Simply calling this will give you a list of supported resolutions. You can simply change the resolution with xrandr --size where is the number given in the first column of the xrandr output. HTH, Carsten PS: Final note: Recently I came across a few projectors which were really bad at low resolutions and only worked fine with (much) higher resolutions, e.g. 1600x1200 was fine, but I got no sync on 800x600. Weird, but worth a try. The following two things usually help a lot if you are running the curs^Wnice fglrx drivers from ATI^WAMD:

sudo aticonfig –enable-monitor=lvds,crt1

enables the second display on my Thinkpad, while

sudo aticonfig –enable-monitor=lvds,none

disables it again.

If you happen to have problems with the wrong resolution, try the xrandr tool (found in the package with the same name). Simply calling this will give you a list of supported resolutions. You can simply change the resolution with

xrandr –size

where is the number given in the first column of the xrandr output.

HTH, Carsten

PS: Final note: Recently I came across a few projectors which were really bad at low resolutions and only worked fine with (much) higher resolutions, e.g. 1600×1200 was fine, but I got no sync on 800×600. Weird, but worth a try.

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