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skaveria
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Joined: 23 Nov 2011
Posts: 14
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 Posted: Sun Mar 11, 2012 8:18 pm Post subject: [Solved]Changing screen resolution |
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I installed gentoo and after a lot of trial and error i got X and awesomeWM working. Im using a laptop with intel graphics and I would like to know how to change the screen resolution. Ive tried following a guide on the wiki and it asks to use a tool called xrandr to identify my monitor name and device name, and im not sure how to do that. Any help would be appreciated thanks
Last edited by skaveria on Mon Mar 12, 2012 3:54 pm; edited 1 time in total |
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GENERiCfr
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Joined: 13 Feb 2012
Posts: 11
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| Posted: Sun Mar 11, 2012 8:55 pm Post subject: |
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Look at the "help" and "man" pages;
| Code: | xrandr --help
man xandr |
now type:
You should get some output. Mine was:
| Code: |
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 4096 x 4096
VGA-0 disconnected (normal left inverted right x axis y axis)
DVI-0 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 338mm x 270mm
1280x1024 60.0*+ 75.0
1152x864 75.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 72.8 75.0 66.7 60.0
720x400 70.1
S-video disconnected (normal left inverted right x axis y axis) |
and for example I want to change resolution to 1024x768@70Hz:
| Code: | | xrandr --output DVI-0 --mode 1024x768--rate 70 |
That's all. |
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skaveria
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Joined: 23 Nov 2011
Posts: 14
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| Posted: Sun Mar 11, 2012 9:02 pm Post subject: |
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xrandr -q
| Code: | xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1024 x 768, current 1024 x 768, maximum 1368 x 768
default connected 1024x768+0+0 0mm x 0mm
1024x768 0.0*
1368x768_60.00 59.9 |
i set the 1368 one up from a guide i read but when i try setting it as the output with | Code: | | xrandr --output default --mode "1368x768_60.00" |
OR
| Code: | | xrandr --output default --mode 1368x768_60.00 --rate 60 |
I get | Code: | xrandr: Failed to get size of gamma for output default
xrandr: Configure crtc 0 failed[c |
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GENERiCfr
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Joined: 13 Feb 2012
Posts: 11
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| Posted: Mon Mar 12, 2012 2:56 pm Post subject: |
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delete the 1368x768_60.00, and perform everything again.
1. You should get some output. Mine was:
| Code: | # 1368x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 85.86 MHz
Modeline "1368x768_60.00" 85.86 1368 1440 1584 1800 768 769 772 795 -HSync +Vsync
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2. Define new mode. My example:
| Code: | xrandr --newmode "1368x768_60.00" 85.86 1368 1440 1584 1800 768 769 772 795 -HSync +Vsync
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Of course, you'll got different numbers there.
3. Add new mode:
| Code: | | xrandr --addmode default 1368x768_60.00 |
4. And the last step:
| Code: | | xrandr --output default --mode 1368x768_60.00 |
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skaveria
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Joined: 23 Nov 2011
Posts: 14
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| Posted: Mon Mar 12, 2012 3:53 pm Post subject: |
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| I figured it out. the reason i couldnt get my native resolution was because i was using vesa. I recompiled with intel support and now things are working great. |
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carlosalvatore
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Joined: 22 Nov 2011
Posts: 3
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| Posted: Sun Jun 10, 2012 8:12 pm Post subject: |
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Hi, I bought a PCIe Video Card ASUS HD 5450 (ATI Radeon HD 5xxx) and I'm trying to change resolution to 1600x1200 but xrandr gives me the error message:
| Code: | | xrandr: Configure crtc 0 failed |
I used this commands:
| Code: | cvt 1600 1200 75
# 1600x1200 74.98 Hz (CVT 1.92M3) hsync: 94.09 kHz; pclk: 204.75 MHz
Modeline "1600x1200_75.00" 204.75 1600 1720 1888 2176 1200 1203 1207 1255 -hsync +vsync |
| Code: | xrandr --newmode 1600x1200 204.75 1600 1720 1888 2176 1200 1203 1207 1255 -hsync +vsync
xrandr --addmode CRT1 1600x1200
xrandr --output CRT1 --mode 1600x1200 --rate 75 |
I'm using fglrx.
my Xorg.conf.
| Quote: | | http://pastebin.com/j06HW6K1 |
my /var/log/Xorg.0.log
| Quote: | | http://pastebin.com/7ApDnsDu |
I have also tried with other refresh rates. My Monitor supports the resolution, it was working before I bought the PCIe card, back then I used the built in card (Radeon HD 3300).
Thank you.
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Cowabunga! |
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