1859-4AU

Hardware Specifications of Thinkpad R52 Machine Type 1859-4AU

• Processor:
  • Intel Pentium M (Dothan) 1.73 GHz
• Video Adapter:
  • Intel Graphics Media Accelerator 900 Intel 915GM
• Display
  • 15.0" TFT display with resolution of 1400x1050 on Intel 915GM
• 512 MB PC2-4200 CL4 NP DDR2 (533 MHz) SDRAM SODIMM memory standard, supports up to 2GB maximum memory.
• 60 GB 4200 rpm IDE HDD
• AD1981B AC'97 Audio controller
• UltraBay Enhanced with the following:
  • CD-RW/DVD-ROM Combo drive : 24x24x24x/8x CD-RW/DVD
• Broadcom 10/100/1000 Ethernet
• CDC slot with:
  • IBM Integrated 56K Modem (MDC-2)
• MiniPCI slot with one of the following: (not sure)
  • Intel PRO/Wireless 2200BG Mini-PCI Adapter
  • Intel PRO/Wireless 2915ABG Mini-PCI Adapter
• CardBus slot (Type 2)
• ExpressCard/54 slot
• IBM Embedded Security Subsystem 2.0
• IBM Active Protection System
• FireWire (IEEE1394)

Thinkpad Hardware Maintenance Manual

• ThinkPad R50e, R51e, R52 - Hardware Maintenance Manual (August 2005) (4,398,428 Bytes)

Installing Fedora Core 5

• Aside from the following PCM issue, the configuration challenges are the routine issues of deciding on your partitioning and deciding which packages to include.
• After the first reboot, the installation process asks your choice for default PCM device. The two options are: Intel ICH - Intel ICH6 / Intel ICH - IEC958.

I have no idea which to choose, and don't know if the choice is one that can easily be changed later. There is no obvious external digital output, so I choose the first and hope for the best.

• After the initial install, in order to get the system up to date, you will have to TWICE as root issue the command:

# yum update and then wait a long time for each update to complete, as there may be around 100 packages updated each time.

• see 1400x1050 on Intel 915GM. Download and install 915resolution and add to /etc/rc.local the line: 915resolution 3c 1400 1050
• Getting suspend and resume to work:
  • Check BIOS setting: Power On; Press F1 to enter BIOS settings. Check that the value for Config -> Power -> "Allow suspend mode on legacy OS" is: Enabled. On my system, this BIOS option did not affect FC4; however FC5 would not resume properly if the setting was Disabled.
  • To /boot/grub/grub.conf add to the relevant lines beginning "kernel" the following option: acpi_sleep=s3_bios
  • To /usr/sbin/pm-suspend, following the line echo -n "mem" > /sys/power/state, add the line: 915resolution 3c 1400 1050

• Controlling cpuspeed: My preference is to edit /etc/cpuspeed.conf, commenting out -n and adding OPTS="$OPTS -s 0 -i 1 -r -p 45 50". My CPU use patterns are high spikes with low idles so this provides maximum responsiveness but generally keeps the CPU at (ambient temperature + 20 degrees Celsius).

Installing Fedora 7

• To avoid problems when the computer is turned on with external monitor connected:
  • BIOS setting: Configure Display: Startup on Internal LCD (not Both)

• To get the native 1400x1050 internal LCD resolution:
  • Install 915resolution
  • Edit /etc/sysconfig/915resolution to have the line

RESOLUTION="3c 1400 1050"

• To get the internal display to resume properly after suspend (instead of the ghostly glow)
  • Make an executable file /etc/pm/config.d/r52.cfg with

DISPLAY_QUIRK_S3_BIOS=true

• Not sure how to get the modem working; the installer identifies it as

Intel 82801FB/FBM/FR/FW/FRW (ICH6 family) AC'97 Modem Controller

• Edit xorg.conf to enable different desktop on external monitor.

Thinkpad Family: R52