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Thread: "Unknown Monitor" and cant increase resolution beyoud 800x600

  1. #51
    Join Date
    Feb 2010
    Location
    Orange County, CA
    Beans
    8
    Distro
    Ubuntu 10.04 Lucid Lynx

    Smile Re: "Unknown Monitor" and cant increase resolution beyoud 800x600

    Oh my God I am so happy! I did it!, well I cheated sort of, but I learned a lot!

    After numerous attempts using the xrandr command I started to look at threads that mentioned xorg.conf. and started modifying it. Last night tried a "virtual resize" and the horizontal sync was totally gone and I had an unreadable screen. Fortunately I'm still just playing around with Unbuntu so I reloaded Unbuntu onto my root partition, installed all the updates and was back to where I started at least.

    Today I found another thread that mentioned the "lspci" command. Finally I could see that SiS drivers were there for my chipset. Then I simply copied the xorg.conf that another user posted:

    Section "Device"
    Identifier "Silicon Integrated Systems [SiS] 65x/M650/740 PCI/AGP VGA Display Adapter"
    Driver "sis"
    BusID "PCI:1:0:0"
    EndSection

    Section "Monitor"
    Identifier "Generic Monitor"
    Option "DPMS"
    HorizSync 28-51
    VertRefresh 43-60
    EndSection

    Section "Screen"
    Identifier "Default Screen"
    Device "Silicon Integrated Systems [SiS] 65x/M650/740 PCI/AGP VGA Display Adapter"
    Monitor "Generic Monitor"
    DefaultDepth 24
    SubSection "Display"
    Depth 1
    Modes "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
    Depth 4
    Modes "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
    Depth 8
    Modes "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
    Depth 15
    Modes "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
    Depth 16
    Modes "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
    Depth 24
    Modes "1024x768" "800x600" "640x480"
    EndSubSection
    EndSection
    then I commented out the default values in my orignal xorg.conf with #

    I now have a working 1024x768 mode which is what I had with Windows XP.

    So nice not to have to scroll all over anymore!

    So, now what I need is a good resource, even a book, that lists command line commands and what they do. sort of like the "man" pages, but an overview. I'm only learning commands as I stumble across them.

    Thanks so much everyone for your posts. Seems like I've found something that works!

    Chris

  2. #52
    Join Date
    Feb 2010
    Beans
    35

    Re: "Unknown Monitor" and cant increase resolution beyoud 800x600

    Quote Originally Posted by sharaq View Post
    what is the operating system you are using? is it ubuntu 5.10??
    I've used this in 9.10..

    if you miss out any part of the output it gives this error message(which you have copied from the step 2)recheck it. I think you have missed the last part of it ,most likely, the part in bold letters.


    hope this will help you....

    I get this same error, and i know it's typed in correctly. Any other ideas on this one?

  3. #53
    Join Date
    Feb 2010
    Beans
    35

    Re: "Unknown Monitor" and cant increase resolution beyoud 800x600

    Quote Originally Posted by sarum View Post
    Hello, I have the same 800x600 problem. I followed your advice to stage 3 and got this reply:-
    X Error of failed request: BadName (named color or font does not exist)
    Major opcode of failed request: 149 (RANDR)
    Minor opcode of failed request: 16 (RRCreateMode)
    Serial number of failed request: 21
    Current serial number in output stream: 21
    If you can help in any way I'd be very grateful
    Thankyou.......sarum

    I get this same error, and I know it's being typed in correctly the xrandr --newmode line. : (. Any other ideas.

  4. #54
    Join Date
    Aug 2005
    Beans
    30

    Re: "Unknown Monitor" and can't increase resolution beyoud 800x600

    I'm definitely with you here!

    My problem is a little different.

    When I first tried the live CD the resolution choices included 1280 X 1024 and it worked just fine setting to that.
    After I installed Ubuntu9.1 to my second HD I was able to set the res. to 1280 X 1024 with no problem.
    It remained at that setting through several re-boots.

    Then I tried to get Windoz back. I re-installed Grub2 etc. but it didn't work. (I have windoz on the first HD and Ubuntu on a second HD. - I'm on the trail of fixing that problem ...)

    I restored the Windoz 2K MBR and fired up Windoz. Fine, it's back.
    When I loaded the UbuntuLive CD though, I found I was limited, as most in this thread, to 800 X 600.

    I've played a bit with some of the solutions in this thread and have no doubt I'll get it working again.

    Which brings me to my real question:
    It is apparent that Ubuntu has a means of checking the monitor and building a table of available resolutions at installation.

    Why would it work initially and subsequently fail?

    Is there a way to force a scan from a terminal with an option helping the scanner?

    Roy.

    ------ edit ---------
    The monitor I'm using is an NEC multisync LCD1700V
    Last edited by MeanRoy; March 6th, 2010 at 09:59 PM. Reason: add info

  5. #55
    Join Date
    Aug 2005
    Beans
    30

    Re: "Unknown Monitor" and cant increase resolution beyoud 800x600

    OK, Ubuntu is totally blameless!
    After cogitating on the fact that the resolution settings originally worked fine I shut the system down and re-seated the connectors.

    That did it, after re-booting all is well.

    Still have my boot problem but I'm hot on the trail.

    OK, since others have changed resolution with xrandr I tried to do the same. Unfortunately it didn't work for me. Here's the I/O:
    Code:
    ubuntu@ubuntu:~$ cvt 1024 768
    # 1024x768 59.92 Hz (CVT 0.79M3) hsync: 47.82 kHz; pclk: 63.50 MHz
    Modeline "1024x768_60.00"   63.50  1024 1072 1176 1328  768 771 775 798 -hsync +vsync
    ubuntu@ubuntu:~$ xrandr --newmode "1024x768_60.00"   63.50  1024 1072 1176 1328  768 771 775 798 -hsync +vsync
    ubuntu@ubuntu:~$ xrandr --addmode default 1024x768_60.00
    ubuntu@ubuntu:~$ xrandr --output default --mode 1024x768_60.00
    xrandr: Configure crtc 0 failed
    ubuntu@ubuntu:~$ xrandr
    Screen 0: minimum 320 x 240, current 800 x 600, maximum 1280 x 1024
    default connected 800x600+0+0 0mm x 0mm
       800x600        60.0*    56.0  
       768x576        60.0  
       720x576        60.0  
       856x480        60.0  
       800x480        60.0  
       720x480        61.0  
       640x480        60.0  
       400x300        60.0  
       320x240        61.0  
       856x600        60.0  
       1280x1024_60.00   59.9  
       1024x768_60.00   59.9  
    ubuntu@ubuntu:~$
    (The 1280x1024 is the first I tried, when it didn't work I tried to back off to 1024x768 but got the same result.)
    Having read some of the other threads I ran lspci and got this:
    Code:
    ubuntu@ubuntu:~$ lspci
    00:00.0 Host bridge: Silicon Integrated Systems [SiS] 730 Host (rev 02)
    00:00.1 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev d0)
    00:01.0 ISA bridge: Silicon Integrated Systems [SiS] SiS85C503/5513 (LPC Bridge)
    00:01.1 Ethernet controller: Silicon Integrated Systems [SiS] SiS900 PCI Fast Ethernet (rev 82)
    00:01.2 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 07)
    00:01.3 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 07)
    00:01.4 Multimedia audio controller: Silicon Integrated Systems [SiS] SiS PCI Audio Accelerator (rev 02)
    00:02.0 PCI bridge: Silicon Integrated Systems [SiS] Virtual PCI-to-PCI bridge (AGP)
    00:0b.0 Communication controller: Agere Systems Venus Modem (V90, 56KFlex)
    01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 630/730 PCI/AGP VGA Display Adapter (rev 31)
    Since I haven't been able to fix my boot problem yet I can't try the fix that worked for ccroy yet.

    Roy.
    Last edited by MeanRoy; March 7th, 2010 at 02:04 AM.

  6. #56
    Join Date
    Feb 2010
    Beans
    35

    Re: "Unknown Monitor" and cant increase resolution beyoud 800x600

    here is an update. Modified that file so it looks like this now. See below under xorg.config. Rebooted. No change. 800X600 is the highest it will go.

    HERE IS ME RUNNING THESE COMMANDS AGAIN AFTER rebooting. Good news, it let me run all the commands without errors finally. but than got the error at the end.


    $ xrandr
    Screen 0: minimum 320 x 240, current 800 x 600, maximum 800 x 600
    default connected 800x600+0+0 0mm x 0mm
    800x600 60.0* 56.0
    640x480 60.0
    400x300 60.0 56.0
    320x240 60.0
    1024x768_60.00 (0x6c) 63.5MHz
    h: width 1024 start 1072 end 1176 total 1328 skew 0 clock 47.8KHz
    v: height 768 start 771 end 775 total 798 clock 59.9Hz
    chayse@chayse-desktop:~$ xrandr --output default --mode 1024x768_60.00
    xrandr: cannot find mode 1024x768_60.00
    chayse@chayse-desktop:~$ xrandr --addmode default 1024x768_60.00
    chayse@chayse-desktop:~$ xrandr --output default --mode 1024x768_60.00
    xrandr: screen cannot be larger than 800x600 (desired size 1024x768)

    xorg.config

    Section "ServerLayout"
    Identifier "Default Layout"
    Screen 0 "Screen0" 0 0
    EndSection

    Section "Monitor"
    Identifier "Monitor0"
    Modeline "1024x768_60.00" 63.50 1024 1072 1176 1328 768 771 775 798 -hsync +vsync
    Option "PreferredMode" "1024x786_60.00"
    EndSection

    Section "Device"
    Identifier "Device0"
    Driver "nv"
    Option "UseEDID" "false"
    EndSection

    Section "Screen"
    Identifier "Screen0"
    Device "Device0"
    Monitor "Monitor0"
    DefaultDepth 24
    SubSection "Display"
    Modes "1024x768_60.00"
    Depth 24
    EndSubSection
    EndSection

  7. #57
    Join Date
    Aug 2006
    Location
    Oklahoma
    Beans
    16
    Distro
    Ubuntu 6.06

    Re: "Unknown Monitor" and cant increase resolution beyoud 800x600

    interesting, everything works upto step5

    mystdragon@dragon-1:~$ cvt 1440 900
    # 1440x900 59.89 Hz (CVT 1.30MA) hsync: 55.93 kHz; pclk: 106.50 MHz
    Modeline "1440x900_60.00" 106.50 1440 1528 1672 1904 900 903 909 934 -hsync +vsync
    mystdragon@dragon-1:~$ xrandr --newmode "1440x900_60.00" 106.50 1440 1528 1672 1904 900 903 909 934 -hsync +vsync
    mystdragon@dragon-1:~$ xrandr --addmode default 1440x900_60.00
    mystdragon@dragon-1:~$ xrandr --output default --mode 1440x900_60.00
    xrandr: screen cannot be larger than 800x600 (desired size 1440x900)
    mystdragon@dragon-1:~$

    Any assistance would be appreciated.

    I had previously tried jamming the settings in the xorg.conf file, but it was being ignored. I have tried many different drivers, all the way down to 171. I have tried envyng thing. And by the way... this is NOT an Ubuntu problem, it is derived from both XORG and the video drivers. Every distro I have tried including Sabayon 5 have this issue with my system, which is a fairly simple system. Nvidia 8800 GT. I don't know why the powers that be fix this. It is insanely more difficult than editing the old xorg.conf file, which used to work in Versions 9.04 and below.

  8. #58
    Join Date
    Aug 2006
    Location
    Oklahoma
    Beans
    16
    Distro
    Ubuntu 6.06

    Re: "Unknown Monitor" and cant increase resolution beyoud 800x600

    Very interesting indeed. I never got anything to work, manually editing xorg.conf, using the xrandr methods. However, I removed the DVI cable and put back the analog cable with an adapter to the nvidia 8800 GT card, and everything now is working, including Twinview. I hooked my old 19" CRT to have a dual screen. So if your stuck like I was, and nothing seemed to work, and you are using a DVI cable, you might want to consider trying an analog cable.

  9. #59
    Join Date
    Apr 2010
    Beans
    1

    Re: "Unknown Monitor" and cant increase resolution beyoud 800x600

    I'm having the "Connection crtc 0 failed" error. I can do --newmode, and then --addmode, but I can't --output to my new resolution. Any ideas?

  10. #60
    Join Date
    Sep 2006
    Location
    Minsk, Belarus
    Beans
    206

    Re: "Unknown Monitor" and cant increase resolution beyoud 800x600

    Quote Originally Posted by mawiles View Post
    Very interesting indeed. I never got anything to work, manually editing xorg.conf, using the xrandr methods. However, I removed the DVI cable and put back the analog cable with an adapter to the nvidia 8800 GT card, and everything now is working, including Twinview. I hooked my old 19" CRT to have a dual screen. So if your stuck like I was, and nothing seemed to work, and you are using a DVI cable, you might want to consider trying an analog cable.
    Back in the good ol' days of long and complicated xorg.conf files that actually did anything, I'd generally have to install while using a VGA cable, then switch to a DVI cable, once I had the box up and running.

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