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Thread: HOWTO: Screen Resolution in Hoary 5.04

  1. #11
    Join Date
    Mar 2005
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    11

    Re: HOWTO: Screen Resolution in Hoary 5.04

    How will the modeline be for a 12" laptop LCD with 1024x768?

  2. #12
    Join Date
    Jan 2005
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    42

    Re: HOWTO: Screen Resolution in Hoary 5.04

    also, just FYI, if you're running an nvidia card and your monitor says it doesn't support a resolution, it won't let you change to it. In order to fix this problem, go into the "Device" section of your xorg.conf and add the following line:

    Code:
    Option "IgnoreEDID" "true"
    THIS IS NOT RECOMMENDED UNLESS YOU KNOW WHAT YOU'RE DOING. You can severely damage your monitor if you set it to an unsupported resolution.

  3. #13
    Join Date
    Mar 2005
    Location
    UK
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    3
    Distro
    Ubuntu 7.04 Feisty Fawn

    Re: HOWTO: Screen Resolution in Hoary 5.04

    argh, Ive followed the guide on how to change resolution, but its still locked at 60hz
    I use 1280x960 @72hz when Im using windows and would really love to use it on ubuntu

    heres my xorg.conf

    Code:
    Section "Device"
    	Identifier	"NVIDIA Corporation NV17 [GeForce4 MX 420]"
    	Driver		"nv"
    	BusID		"PCI:1:0:0"
    	Option "IgnoreEDID" "true"
    EndSection
    
    Section "Monitor"
    	Identifier	"IBM E74"
    	Option		"DPMS"
    #	DisplaySize	270	203	# 1024x768 96dpi
    	DisplaySize	338	254	# 1280x960 96dpi
    #	DisplaySize	338	270	# 1280x1024 96dpi
    #	DisplaySize	370	277	# 1400x1050 96dpi
    #	DisplaySize	423	370	# 1600x1400 96dpi
    	Modeline "1280x960_72.00"  124.54  1280 1368 1504 1728  960 961 964 1001  -HSync +Vsync
    EndSection
    
    Section "Screen"
    	Identifier	"Default Screen"
    	Device		"NVIDIA Corporation NV17 [GeForce4 MX 420]"
    	Monitor		"IBM E74"
    	DefaultDepth	24
    	SubSection "Display"
    		Depth		1
    		Modes		"1280x1024" "1200x800" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    	EndSubSection
    	SubSection "Display"
    		Depth		4
    		Modes		"1280x1024" "1200x800" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    	EndSubSection
    	SubSection "Display"
    		Depth		8
    		Modes		"1280x1024" "1200x800" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    	EndSubSection
    	SubSection "Display"
    		Depth		15
    		Modes		"1280x1024" "1200x800" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    	EndSubSection
    	SubSection "Display"
    		Depth		16
    		Modes		"1280x1024" "1200x800" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    	EndSubSection
    	SubSection "Display"
    		Depth		24
    		Modes		"1280x1024" "1280x960" "1200x800" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    	EndSubSection
    EndSection
    
    Section "ServerLayout"
    	Identifier	"Default Layout"
    	Screen		"Default Screen"
    	InputDevice	"Generic Keyboard"
    	InputDevice	"Configured Mouse"
    EndSection
    
    Section "DRI"
    	Mode	0666
    EndSection

  4. #14
    Join Date
    Apr 2005
    Location
    Devonshire
    Beans
    60
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: HOWTO: Screen Resolution in Hoary 5.04

    Hi Ren. I've had low refresh rate problems too with a 19" iiyama Vision Master Pro 450. I've tried the various suggestions with little effect, so I got a bit bold:

    My /etc/X11/xorg.config file contained the section

    Section "Monitor"
    Identifier "Generic Monitor"
    Option "DPMS"
    HorizSync 28-64
    VertRefresh 43-60

    I simply stuck a 1 in front of each of the 6's (ie 28-164 and 43-160), saved, rebooted and lo!, I get refresh rates options of 60, 75 and 85hz.

    Hope this is of assistance.
    Last edited by pannerrammer; April 4th, 2005 at 06:12 PM.

  5. #15
    Join Date
    Nov 2004
    Beans
    489

    Re: HOWTO: Screen Resolution in Hoary 5.04

    Quote Originally Posted by pannerrammer
    I simply stuck a 1 in front of each of the 6's (ie 28-164 and 43-160), saved, rebooted and lo!, I get refresh rates options of 60, 75 and 85hz.

    Hope this is of assistance.
    I don't know what you did, but the proper way to force a single refresh rate is below:


    Section "Monitor"
    Identifier "Generic Monitor"
    Option "DPMS"
    HorizSync 28-64
    VertRefresh 85

    That would be fore 85hz. The VertRefresh number is all you care about. You can give it a range as well. Your default range maxed out at 60hz, which is why you couldn't go higher.

  6. #16
    Join Date
    Apr 2005
    Location
    Devonshire
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    60
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: HOWTO: Screen Resolution in Hoary 5.04

    Thanks for your comments, noted and appreciated.

    Setting the VertRefresh to 85 gives me just the 85hz refresh rate... but none of the lower rates, which I assume I might require if I swap to another (possibly even older) monitor. Setting the VertRefresh to a range (50-85 seems about right) gives me the options of 60, 75 and 85hz

    I've spent another happy hour fiddling to verify my settings and it appears that the HorizSync setting is indeed also of crucial relevance. See the table below:

    HorizSync . . . . VertRefresh . . . . max resolution
    30-75 . . . . . . . . . 50-85 . . . . . . . . . . 1024x768@85hz (plus 75, 60hz)
    30-90 . . . . . . . . . 50-85 . . . . . . . . . . 1024x768@75hz (plus 60hz)
    30-100 . . . . . . . . 50-85 . . . . . . . . . . 1280x1024@85hz (plus 75, 60hz)

    So, the settings below seem to work best for me
    HorizSync 30-100
    VertRefresh 50-85

    Thanks again.
    Last edited by pannerrammer; April 5th, 2005 at 08:13 PM.

  7. #17
    Join Date
    Nov 2004
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    489

    Re: HOWTO: Screen Resolution in Hoary 5.04

    Quote Originally Posted by pannerrammer
    I've spent another happy hour fiddling to verify my settings and it appears that the HorizSync setting is indeed also of crucial relevance.
    I believe it is monitor-dependent. Eg, different monitors will run at a different HorizSync for each resolution/VertRefresh. This is not generally a problem you need to worry about since keeping the default should almost always work.

  8. #18
    Join Date
    Apr 2005
    Location
    York, PA
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    29
    Distro
    Ubuntu 7.10 Gutsy Gibbon

    Re: HOWTO: Screen Resolution in Hoary 5.04

    Quote Originally Posted by amerigo5
    I have a 15.4 widescreen Toshiba M35X and using the following on /etc/X11/xorg.conf worked for me:

    Identifier "Generic Monitor"
    HorizSync 30-107
    VertRefresh 50-185
    Option "DPMS"
    Modeline "1280x800" 159.74 1280 1296 1552 1664 800 800 815 835
    ModeLine "1680x1050" 214.51 1680 1800 1984 2288 1050 1051 1054 1103

    Refer to the original post at
    http://www.ubuntuforums.org/showthr...ighlight=50-185
    I've got a Toshiba laptop as well, (P10-S429) and after installing Ubuntu, it defaulted to 1280x800 automatically, which was nice. Fedora I had to do something similar to what you have above.

  9. #19
    Join Date
    Feb 2005
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    2

    Re: HOWTO: Screen Resolution in Hoary 5.04

    Thanks for the guide.

    BTW: Will ANYONE ever actually fix this kludge?

    Linux folks like to bash MS folks, but Windows seems to be able to change screen resolutions without resorting to obscure text file editing.

    -Matt

  10. #20
    Join Date
    Apr 2005
    Beans
    1

    Re: HOWTO: Screen Resolution in Hoary 5.04

    I already had all the resolutions in xorg.conf, but wasn't able to choose anything higher than 800x600. After changing the defaultdepth from 24 to 16, it all worked

    Section "Screen"
    Identifier "Default Screen"
    Device "ATI Technologies, Inc. 3D Rage IIC (AGP)"
    Monitor "L1730B"
    DefaultDepth 16


    My monitor is LCD and my graphic card is very old.

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