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11-03-2010, 06:30 AM
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#1
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Member
Registered: Jan 2010
Location: Denmark
Distribution: Gentoo, Archlinux, FreeBSD, Slackware
Posts: 84
Rep:
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slackware 13.1 on projector
I was trying to plug projector on my laptop with slackware 13.1 installed. The problem is that the projector stops showing whenever I start X. I can see everything starting from LILO loader, but whenever I type "startx" - bam, no signal or just a black screen on the wall. I try to switch to console mode with ctrl+alt+f1 - the view appears, switching back to X with ctrl+alt+f7 - view disappears.
I am using awesome WM. I tried XFCE, but the result was the same. I also tried to change resolution to
Code:
xrandr --output default --mode 1024x768 / 800x600
, but again, no difference. My laptop is ASUS F3Jc. Fn keys doesn't help as well.
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11-03-2010, 06:58 AM
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#2
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Member
Registered: Mar 2006
Location: Dyserth, Wales
Distribution: Slackware 14.0, Slackware 14.1, Slackware-current
Posts: 306
Rep:
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I use a projector with my Slackware 13.1 laptop running both KDE4 and XFCE. The key for me is the NVIDIA proprietary driver which will detect displays and allow you to configure them separately, so the internal lcd can be disabled and the external projector enabled, vice-versa or both can be configured to work in "TwinView". No doubt an expert in xorg configuration could do this without the nvidia driver, but if you have nvidia graphics that would be one way to fix your problem.
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1 members found this post helpful.
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11-03-2010, 07:05 AM
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#3
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Member
Registered: Dec 2007
Posts: 217
Rep:
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have a look at your devices with
and then try something like
Code:
xrandr --output vga1 --mode 1280x1024
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11-03-2010, 07:10 AM
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#4
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Member
Registered: Jan 2010
Location: Denmark
Distribution: Gentoo, Archlinux, FreeBSD, Slackware
Posts: 84
Original Poster
Rep:
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Quote:
Originally Posted by zoran119
have a look at your devices with
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This is the output:
Code:
Screen 0: minimum 320 x 240, current 1280 x 800, maximum 1280 x 800
default connected 1280x800+0+0 0mm x 0mm
1280x800 50.0*
1024x768 51.0
800x600 52.0
640x512 53.0
640x480 54.0 55.0
512x384 56.0
400x300 57.0
320x240 58.0
And as I told in my first post, I have tried to change to different resolutions (1024x768 and 800x600) which just didn't make any difference.
And yes, I have NVidia. Could you explain in more details how to do that switching?
Last edited by Asido; 11-03-2010 at 07:12 AM.
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11-03-2010, 07:57 AM
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#5
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Member
Registered: Mar 2006
Location: Dyserth, Wales
Distribution: Slackware 14.0, Slackware 14.1, Slackware-current
Posts: 306
Rep:
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To do the switching usng the nvidia proprietary driver, you have to get the driver to install from the nvidia website (google linux driver nvidia). Once you have run the installation script you should see an nvidia driver icon / menu entry in kde / xfce or whatever you are using to start applications. That then gives you a fairly easy to use GUI interface to the driver including the various displays that it detects.
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1 members found this post helpful.
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11-03-2010, 08:08 AM
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#6
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Member
Registered: Dec 2007
Posts: 217
Rep:
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if you want to use the proprietary nvidia driver, i'd suggest installing it from sbo. then you should be able to run nvidia-settings to configure your screens.
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1 members found this post helpful.
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11-03-2010, 09:12 AM
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#7
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Member
Registered: Jan 2010
Location: Denmark
Distribution: Gentoo, Archlinux, FreeBSD, Slackware
Posts: 84
Original Poster
Rep:
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I don't have any icons on my window manager, but nvidia-settings command worked. I'll try to do something tomorrow and will let you know.
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11-04-2010, 03:24 AM
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#8
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Member
Registered: Mar 2006
Location: Dyserth, Wales
Distribution: Slackware 14.0, Slackware 14.1, Slackware-current
Posts: 306
Rep:
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@Zoran119 - you are right of course - the SBo route is much better than just downloading from nvidia and running their install. I think in fact last time I installed, I did it that way too. Looks like OP has the driver anyway, so should be able to switch displays once driver gui is displayed.
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1 members found this post helpful.
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11-04-2010, 05:45 AM
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#9
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Moderator
Registered: Jan 2005
Location: Central Florida 20 minutes from Disney World
Distribution: SlackwareŽ
Posts: 13,984
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Hi,
Look at ' Multiple monitors/Dual screen_Nvidia ' on the Arch_Xorg_wiki. You should be able to setup the dual-head within '/etc/X11/xorg.conf' from this example.

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11-05-2010, 08:57 AM
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#10
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Member
Registered: Jan 2010
Location: Denmark
Distribution: Gentoo, Archlinux, FreeBSD, Slackware
Posts: 84
Original Poster
Rep:
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Well, the problem was that after I plug the projector cable, in nvidia-settings by default that display is disabled. I need to enable it and select as clone of the existing screen every time. So that kinda solved the problem.
Last edited by Asido; 11-05-2010 at 08:59 AM.
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