IBM ThinkPad T21 - ArchWiki

# IBM ThinkPad T21

Works with no known issues. Tested on 2008.03 and 2008.06.

## Configuration

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Reason: please use the first argument of the template to provide a brief explanation. (Discuss)

### CPU Frequency Scaling

Install cpudyn from the AUR.

Add speedstep_lib, speedstep_smi, and cpufreq_userspace to MODULES array in /etc/rc.conf.

    MODULES=(... speedstep_lib speedstep_smi cpufreq_userspace ...)

Add cpudyn to DAEMONS array in /etc/rc.conf

    DAEMONS=(... cpudyn ...)

### Hotkeys

They work better after loading the thinkpad-acpi module, to assign the generated keycodes to their supposed functions. You may also want to install tpb (ThinkPad Buttons) if you still have trouble.

#### External VGA

For whatever reason, external VGA output (for an external monitor) was disabled. This was fixed by doing this:

    # echo 1 > /proc/acpi/video/VID/DOS

### Xorg

Works with driver xf86-video-savage. However, to achieve DRI (and thus OpenGL acceleration), you will have to use 16-bit color. The 8 MB of VRAM with the Savage GPU isn't enough to support 24 bit color, OpenGL, and 1024x768. You must either drop color depth or resolution.

Here is the mentioned file, for those who do not have a working configuration yet:

    # /etc/X11/xorg.conf (xorg X Window System server configuration file)

    Section "ServerLayout"
           Identifier     "X.org Configured"
           Screen      0  "Screen0" 0 0
           InputDevice    "Mouse0" "CorePointer"
           InputDevice    "Keyboard0" "CoreKeyboard"
    EndSection
    Section "Files"
           RgbPath      "/usr/share/X11/rgb"
           ModulePath   "/usr/lib/xorg/modules"
           FontPath     "/usr/share/fonts/misc"
           FontPath     "/usr/share/fonts/100dpi:unscaled"
           FontPath     "/usr/share/fonts/75dpi:unscaled"
           FontPath     "/usr/share/fonts/TTF"
           FontPath     "/usr/share/fonts/Type1"
    EndSection
    Section "Module"
           Load  "glx"
           Load  "extmod"
           Load  "xtrap"
           Load  "record"
           Load  "GLcore"
           Load  "dbe"
           Load  "dri"
           Load  "freetype"
    EndSection
    Section "InputDevice"
           Identifier  "Keyboard0"
           Driver      "kbd"
    EndSection
    Section "InputDevice"
           Identifier  "Mouse0"
           Driver      "mouse"
           Option      "Protocol" "auto"
           Option      "Device" "/dev/input/mice"
           Option      "ZAxisMapping" "4 5 6 7"
           ###To enable third trackpoint scrolling button
           Option      "EmulateWheel" "true"
           Option      "EmulateWheelButton" "2"
    EndSection
    Section "Monitor"
           Identifier   "Monitor0"
           VendorName   "Monitor Vendor"
           ModelName    "Monitor Model"
    EndSection
    Section "Device"
           ### Available Driver options are:-
           ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
           ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
           ### [arg]: arg optional
           #Option     "NoAccel"                   # [<bool>]
           #Option     "AccelMethod"               # <str>
           #Option     "HWCursor"                  # [<bool>]
           #Option     "SWCursor"                  # [<bool>]
           #Option     "ShadowFB"                  # [<bool>]
           #Option     "Rotate"                    # [<str>]
           #Option     "UseBIOS"                   # [<bool>]
           #Option     "LCDClock"                  # <freq>
           #Option     "ShadowStatus"              # [<bool>]
           #Option     "CrtOnly"                   # [<bool>]
           #Option     "TvOn"                      # [<bool>]
           #Option     "PAL"                       # [<bool>]
           #Option     "ForceInit"                 # [<bool>]
           #Option     "Overlay"                   # [<str>]
           #Option     "TransparencyKey"           # [<str>]
           #Option     "ForceInit"                 # [<bool>]
           #Option     "DisableXVMC"               # [<bool>]
           #Option     "DisableTile"               # [<bool>]
           #Option     "DisableCOB"                # [<bool>]
           #Option     "BCIforXv"                  # [<bool>]
           #Option     "DVI"                       # [<bool>]
           #Option     "IgnoreEDID"                # [<bool>]
           #Option     "BusType"                   # [<str>]
           #Option     "DmaType"                   # [<str>]
           #Option     "DmaMode"                   # [<str>]
           #Option     "AGPMode"                   # <i>
           #Option     "AGPSize"                   # <i>
           #Option     "DRI"                       # [<bool>]
           Identifier  "Card0"
           Driver      "savage"
           VendorName  "S3 Inc."
           BoardName   "86C270-294 Savage/IX-MV"
           BusID       "PCI:1:0:0"
    EndSection
    Section "Screen"
           Identifier "Screen0"
           Device     "Card0"
           Monitor    "Monitor0"
           DefaultDepth 16
           SubSection "Display"
                   Viewport   0 0
                   Depth     1
           EndSubSection
           SubSection "Display"
                   Viewport   0 0
                   Depth     4
           EndSubSection
           SubSection "Display"
                   Viewport   0 0
                   Depth     8
           EndSubSection
           SubSection "Display"
                   Viewport   0 0
                   Depth     15
           EndSubSection
           SubSection "Display"
                   Viewport   0 0
                   Depth     16
           EndSubSection
           SubSection "Display"
                   Viewport   0 0
                   Depth     24
           EndSubSection
    EndSection

## See also

- Thinkwiki

Category:

- IBM