Description of IBM Thinkpad T20

Support knowledgebase (laptop_daten_ibm_thinkpad_t20)

XFree86: Versions since 3.3.6

Exact modelname

• IBM T20
• Manufacturer's description can be found at : http://www5.pc.ibm.com/de/products.nsf/$wwwovseries/thinkpad+t+series (in German/English)

Processor, Memory, Bus

• Processor

  processor       : 0
  vendor_id       : GenuineIntel
  cpu family      : 6
  model           : 8
  model name      : Pentium III (Coppermine)
  stepping        : 1
  cpu MHz         : 133.817
  cache size      : 256 KB
  fdiv_bug        : no
  hlt_bug         : no
  sep_bug         : no
  f00f_bug        : no
  coma_bug        : no
  fpu             : yes
  fpu_exception   : yes
  cpuid level     : 2
  wp              : yes
  flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr xmm
  bogomips        : 294.09
  

• 256 kByte cache,
• 127 MByte basic memory equipment, optional upgrade to 256 MB

Graphic chip, Display

• Graphic chipset: S3 Inc. 86C270-294 Savage/MX-/IX
• Display: XGA 1024 X 768
• XServer: The XFree86 SVGA Server Version 3.3.6 works fine. Note that the used X Server is a patched version of the SVGA X Server available from XFree86. The pached version can be downloaded from http://www.probo.com/timr/savagemx.html. No particular server options needed. From /root/ServerLog :

  XFree86 Version 3.3.6 / X Window System
  ...
  (--) SVGA: PCI: S3 Unknown chipset (0x8c12) rev 17, Memory @ 0xf0000000
  (--) SVGA: using driver for chipset "s3_savage"
  (--) SVGA: videoram:  8192k
  (--) SVGA: chipset:  s3_savage
  (--) SVGA: videoram: 8192k
  ...
  

• From lspci -v :

  01:00.0 VGA compatible controller: S3 Inc. 86C270-294 Savage/MX-/IX (rev 11) (prog-if 00 [VGA])
          Subsystem: IBM: Unknown device 017f
          Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 11
          Memory at f0000000 (32-bit, non-prefetchable)
          Capabilities: [dc] Power Management version 1
          Capabilities: [80] AGP version 1.0
  05:00.0 Ethernet controller: Xircom Cardbus Ethernet 10/100 (rev 03)
  

• BIOS settings: NONE

Pointing Device

• Trackpoint with 3 Buttons. Recognized and supported under Linux as a standard PS/2 mouse.
• Port for connection of an external PS/2 mouse available.

Sound

• Sound chip: Cirrus Logic CS 4614/22/24 [CrystalClear SoundFusion Audio Accelerator]
• lspci -v Output :

  00:05.0 Multimedia audio controller: Cirrus Logic CS 4614/22/24 [CrystalClear SoundFusion Audio Accelerator] (rev 01)
          Subsystem: IBM: Unknown device 0153
          Flags: bus master, slow devsel, latency 64, IRQ 11
          Memory at e8100000 (32-bit, non-prefetchable)
          Memory at e8000000 (32-bit, non-prefetchable)
          Capabilities: [40] Power Management version 2
  

• Seems to be upported by ALSA Version 0.5.8. Alsa detect Soundchip as a Cirrus Logic CS 4614/22/24
  /usr/sbin/alsaconf generates the following entry in the /etc/modules.conf. However, the configuration is not working !! .

  alias char-major-116 snd
  alias snd-card-0 snd-card-cs461x
  alias char-major-14 soundcore
  alias sound-slot-0 snd-card-0
  alias sound-service-0-0 snd-mixer-oss
  alias sound-service-0-1 snd-seq-oss
  alias sound-service-0-3 snd-pcm-oss
  alias sound-service-0-8 snd-seq-oss
  alias sound-service-0-12 snd-pcm-oss
  options snd snd_major=116 snd_cards_limit=1 snd_device_mode=0660 snd_device_gid=17 snd_device_uid=0
  post-install snd  alsactl restore
  

PCMCIA

• Availalbe slots : 2
• PCMCIA controller: Texas Instruments 1450 rev 03 PCI-to-CardBus
  From /var/log/messages:

  kernel: Linux PCMCIA Card Services 3.1.17
  kernel:   kernel build: 2.2.16 #1 Wed Jul 5 02:58:44 GMT 2000
  kernel:   options:  [pci] [cardbus] [apm]
  kernel: PCI routing table version 1.0 at 0xfdee0
  kernel:   00:02.0 -> irq 11
  kernel:   00:02.1 -> irq 11
  kernel: Intel PCIC probe:
  kernel:   TI 1450 rev 03 PCI-to-CardBus at slot 00:02, mem 0x50000000
  kernel:     host opts [0]: [ring] [serial pci & irq] [pci irq 11] [lat 64/176] [bus 2/4]
  kernel:     host opts [1]: [ring] [serial pci & irq] [pci irq 11] [lat 64/176] [bus 5/7]
  kernel:     ISA irqs (scanned) = 3,4,5,7,9,10 PCI status changes
  

• Necessary options for core and chipset: NONE
• Special IRQ, IO or memory settings: NONE
• Special BIOS settings : NONE
• probe -v and probe -m Output:

    PCI bridge probe: TI 1450 found, 2 sockets.
    i82365
  

IrDA

• Chipset and support under Linux tested. IrDA works fine.
• Special settings : IrDA needs to be activated in the BIOS. Default vaules are OK.

External connection

• 1 USB connector. lspci -v Output:

  00:07.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01) (prog-if 00 [UHCI])
          Flags: medium devsel, IRQ 11
          I/O ports at 1c20
  

• 1 serial port
• 1 parallel port
• Line in, Headphone, Microphone
• Interface for external monitor.
• S-video out.
• RJ-45 and RJ-11 port.

APM

• The following APM Kernel configuration works :

      [*] Enable APM at boot time
      [*] Do CPU IDLE calls
      [*] Enable console blanking using APM
      [*] Ignore multiple suspend/resume cycles
      [*] RTC stores time in GMT
  

Builtin modem

• Lucent Microelectronics WinModem 56k
• lspci -v Output :

  00:03.0 Communication controller: Lucent Microelectronics WinModem 56k (rev 01)
          Subsystem: AMBIT Microsystem Corp.: Unknown device 0440
          Flags: medium devsel, IRQ 11
          Memory at e8101000 (32-bit, non-prefetchable)
          I/O ports at 1c00
          I/O ports at 1800
          Capabilities: [f8] Power Management version 2
  

Other storage media

• Hard disk : IBM-DARA-206000, 5729MB w/418kB Cache, CHS=776/240/63
• CD-ROM : CRN-8241U, ATAPI 24X CD-ROM drive, 128kB Cache
• Floppycontroller : National Semiconductor PC87306

Other technical data

• Size: x x 33 mm ^ 3 Weight: 2.1 kg
• Special equipment :
  • Nothing