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charon79m 10-25-2005 12:00 AM
iMac Resolution Issue
 
I've got a tray loading iMac that I've loaded the PPC verion of Ubuntu on. My display settings are very low, under 640x480 but the exact number escapes me at the moment.

I've seen others have run into this issue before but I've not found the solution for it. Anyone have any suggestions?

Here is my hardware info:
Display:
Code:
0000:00:12.0 VGA compatible controller: ATI Technologies Inc 3D Rage IIC 215IIC [Mach64 GT IIC] (rev 3a)
Dmesg Junk:
Code:
[    0.000000] Total memory = 288MB; using 1024kB for hash table (at c0400000)
[    0.000000] Linux version 2.6.12-9-powerpc (buildd@adare) (gcc version 3.4.5 20050809 (prerelease) (Ubuntu 3.4.4-6ubuntu8)) #1 Mon Oct 10 15:26:45 BST 2005
[    0.000000] Found a Paddington mac-io controller, rev: 0, mapped at 0xfdec0000
[    0.000000] PowerMac motherboard: iMac (first generation)
xorg.conf file:



Code:
mknisely@IMcBuntu:~$ cat /etc/X11/xorg.conf
# /etc/X11/xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the /etc/X11/xorg.conf manual page.
# (Type "man /etc/X11/xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#  sudo dpkg-reconfigure -phigh xserver-xorg

Section "Files"
        FontPath        "/usr/share/X11/fonts/misc"
        FontPath        "/usr/share/X11/fonts/cyrillic"
        FontPath        "/usr/share/X11/fonts/100dpi/:unscaled"
        FontPath        "/usr/share/X11/fonts/75dpi/:unscaled"
        FontPath        "/usr/share/X11/fonts/Type1"
        FontPath        "/usr/share/X11/fonts/CID"
        FontPath        "/usr/share/X11/fonts/100dpi"
        FontPath        "/usr/share/X11/fonts/75dpi"
        # paths to defoma fonts
        FontPath        "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
        FontPath        "/var/lib/defoma/x-ttcidfont-conf.d/dirs/CID"
EndSection

Section "Module"
        Load    "GLcore"
        Load    "i2c"
        Load    "bitmap"
        Load    "ddc"
        Load    "dri"
        Load    "extmod"
        Load    "freetype"
        Load    "glx"
        Load    "int10"
        Load    "type1"
        Load    "vbe"
EndSection

Section "InputDevice"
        Identifier      "Generic Keyboard"
        Driver          "kbd"
        Option          "CoreKeyboard"
        Option          "XkbRules"      "xorg"
        Option          "XkbModel"      "pc104"
        Option          "XkbLayout"    "us"
EndSection

Section "InputDevice"
        Identifier      "Configured Mouse"
        Driver          "mouse"
        Option          "CorePointer"
        Option          "Device"                "/dev/input/mice"
        Option          "Protocol"              "ImPS/2"
        Option          "Emulate3Buttons"      "true"
        Option          "ZAxisMapping"          "4 5"
EndSection

Section "Device"
        Identifier      "ATI Technologies, Inc. 3D Rage IIC 215IIC (Mach64 GT IIC)"
        Driver          "ati"
        BusID          "PCI:0:18:0"
        Option          "UseFBDev"              "true"
EndSection

Section "Monitor"
        Identifier      "iMac"
        Option          "DPMS"
        HorizSync      60-60
        VertRefresh    75-117
EndSection

Section "Screen"
        Identifier      "Default Screen"
        Device          "ATI Technologies, Inc. 3D Rage IIC 215IIC (Mach64 GT IIC)"
        Monitor        "iMac"
        DefaultDepth    24
        SubSection "Display"
                Depth          1
                Modes          "800x600"
        EndSubSection
        SubSection "Display"
                Depth          4
                Modes          "800x600"
        EndSubSection
        SubSection "Display"
                Depth          8
                Modes          "800x600"
        EndSubSection
        SubSection "Display"
                Depth          15
                Modes          "800x600"
        EndSubSection
        SubSection "Display"
                Depth          16
                Modes          "800x600"
        EndSubSection
        SubSection "Display"
                Depth          24
                Modes          "800x600"
        EndSubSection
EndSection

Section "ServerLayout"
        Identifier      "Default Layout"
        Screen          "Default Screen"
        InputDevice    "Generic Keyboard"
        InputDevice    "Configured Mouse"
EndSection

Section "DRI"
        Mode    0666
EndSection
Is there another configuration file that I just don't see?

I hope this is helpful, and I look forward to any suggestions.

Thanks!

MrKnisely

XavierP 10-25-2005 05:40 PM
Code:
Section "Screen"
        Identifier      "Default Screen"
        Device          "ATI Technologies, Inc. 3D Rage IIC 215IIC (Mach64 GT IIC)"
        Monitor        "iMac"
        DefaultDepth    24
        SubSection "Display"
                Depth          1
                Modes          "800x600"
        EndSubSection
        SubSection "Display"
                Depth          4
                Modes          "800x600"
        EndSubSection
        SubSection "Display"
                Depth          8
                Modes          "800x600"
        EndSubSection
        SubSection "Display"
                Depth          15
                Modes          "800x600"
        EndSubSection
        SubSection "Display"
                Depth          16
                Modes          "800x600"
        EndSubSection
        SubSection "Display"
                Depth          24
                Modes          "800x600"
        EndSubSection
EndSection
Here's your problem. Change the "800x600" to read
Code:
Modes          "1240x768" "800x600"
If you need greater resolution, add them to the front of the line as I did.

Restart X (ctrl+alt+backspace) and see if it worked.

charon79m 10-25-2005 08:44 PM
As noted in the first line of my post... my resolution is lower than 640x480.... It's not even the 800x600 that is in my xorg.conf.

Making changes to those settings has no impact at all.

I agree, that should work. It is not, and that is the reason for the post.

Also, this is on an iMac, the Ctrl+Alt+Backspace is not a valid key sequense on a Mac.

MrKnisely

ciotog 10-26-2005 01:31 AM
You could check in the log file for any clues: /var/log/Xorg.0.log
It should tell you what the resolution is, at any rate.

charon79m 10-26-2005 08:12 AM
That's a good idea. I'll give that a look.

I can see the resolution in Gnome's screen size manager. I'm just not around the system right now. It's 5xx by 3xx... I just can't remember the x values.

MrKnisely


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