2007.04
Šarūnas Burdulis
Department of Mathematics
Dartmouth College
Intel Core Duo low voltage processor L2300 (1.50GHz, 2MB L2, 667MHz
FSB)
1GB RAM (2 NonParity DDR2 SDRAM SoDIMM PC2-5300)
Intel Graphics Media Accelerator 950
12.1 inch XGA (1024x768) (Lenovo LTN121XJ-L07)
40GB 5400rpm Serial ATA (Toshiba MK4032GSX)
USB 2.0 CD-RW/DVD-ROM Combo Drive
Intel PRO/1000 Gigabit Ethernet
Intel PRO/Wireless 3945ABG
Firewire
SD Card Reader
56K V.92 Modem
$ lspci 00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03) 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02) 00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02) 00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 02) 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 02) 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 02) 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02) 00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA AHCI Controller (rev 02) 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02) 02:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller 03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02) 15:00.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev b4) 15:00.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller (rev 09) 15:00.2 Generic system peripheral [0805]: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 18)
IBM Rescue and Recovery disks (seven CDs) can be created using preinstalled Windows: All programs|ThinkVantage|Create Recovery Media. However, as long as recovery partition (called predesktop in BIOS) is left intact, system can be restored to the factory default without having recovery CDs.
Debian Etch installer boots normally from the netinstall CD using external
IBM USB DVD-ROM/CD-RW. SATA hard disk and Intel PRO/1000 network adapter are
recognized. Install proceeds without a problem. gdm and Gnome start normally.
Xorg is automatically configured with i810. DRI works (glxinfo|grep
rendering; glxinfo comes from mesa-utils
package). Gigabit ethernet works, uses e1000. ALSA sound works as long as
modem is not disabled in BIOS.
Default 2.6.18 kernel supports SMP. /proc/cpuinfo reports two
CPUs: CPU0 and CPU1.
Fully charged battery provides just 2.5+ hours of mostly idle operation with CPU frequency scaling enabled. Still very low compared to 4 hours with another OS on the same laptop...
After the install CPU scaling uses performance governor and
the frequency does not scale. To enable scaling:
speedstep_centrino and cpufreq_ondemand
kernel modules:
# modprobe speedstep_centrino cpufreq_ondemand
Add them to /etc/modules to be loaded automatically on
next system start.
# apt-get install sysfsutils
/etc/sysfs.conf:
devices/system/cpu/cpu0/cpufreq/scaling_governor=ondemand
devices/system/cpu/cpu1/cpufreq/scaling_governor=ondemand
# /etc/init.d/sysfsutils restart If you have CPU frequency applet on your desktop toolbar, then you should
see frequencies dropping to 1GHz. Available frequencies are 1GHz and 1.5 GHz
(/sys/devices/cpu/...). Should there be more frequency
steps/lower minimum available?
To enable Intel PRO/Wireless 3945ABG some packages from non-free
repository have to be installed. Edit /etc/apt/sources.list by
adding non-free repository, for example:
deb http://ftp.us.debian.org/debian/ etch main
non-free
Then
# apt-get update
and install kernel module, firmware binary and regulatory daemon:
# apt-get install ipw3945-modules-`uname -r` firmware-ipw3945
ipw3945d
I have also commented out all but lo interfaces from
/etc/network/interfaces since Network Manager was in use.
$ lsmod Module Size Used by ipv6 226016 10 i915 17600 2 drm 61332 3 i915 nvram 8328 0 uinput 8288 0 ppdev 8676 0 parport_pc 32132 0 lp 11012 0 parport 33256 3 ppdev,parport_pc,lp button 6672 0 ac 5188 0 battery 9636 0 dm_snapshot 15552 0 dm_mirror 19152 0 dm_mod 50232 2 dm_snapshot,dm_mirror speedstep_centrino 8384 1 freq_table 4576 1 speedstep_centrino cpufreq_ondemand 6636 2 sbp2 20840 0 loop 15048 0 irtty_sir 7808 0 sir_dev 15492 1 irtty_sir snd_hda_intel 17332 2 snd_hda_codec 137856 1 snd_hda_intel snd_pcm_oss 38368 1 snd_mixer_oss 15200 1 snd_pcm_oss pcmcia 34140 0 snd_pcm 68676 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss ipw3945 179972 1 nsc_ircc 20912 0 snd_timer 20996 1 snd_pcm psmouse 35016 0 irda 162588 3 irtty_sir,sir_dev,nsc_ircc snd 47012 8 snd_hda_intel,snd_hda_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer rtc 12372 0 serio_raw 6660 0 i2c_i801 7468 0 crc_ccitt 2240 1 irda ieee80211 29416 1 ipw3945 ieee80211_crypt 5952 1 ieee80211 sdhci 16844 0 mmc_core 23168 1 sdhci i2c_core 19680 1 i2c_i801 firmware_class 9600 2 pcmcia,ipw3945 yenta_socket 24460 1 rsrc_nonstatic 11840 1 yenta_socket pcmcia_core 36852 3 pcmcia,yenta_socket,rsrc_nonstatic soundcore 9248 2 snd snd_page_alloc 9640 2 snd_hda_intel,snd_pcm pcspkr 3072 0 intel_agp 21148 1 agpgart 29896 3 drm,intel_agp tsdev 7520 0 evdev 9088 1 eth1394 18212 0 ext3 119240 1 jbd 52456 1 ext3 mbcache 8356 1 ext3 generic 5476 0 [permanent] sd_mod 19040 3 usbhid 37248 0 ahci 17636 2 libata 89396 1 ahci scsi_mod 124168 4 sbp2,sd_mod,ahci,libata piix 9444 0 [permanent] ide_core 110504 2 generic,piix ehci_hcd 28136 0 ohci1394 30800 0 uhci_hcd 21164 0 ieee1394 86904 3 sbp2,eth1394,ohci1394 e1000 108512 0 usbcore 112644 4 usbhid,ehci_hcd,uhci_hcd thermal 13608 0 processor 28840 2 speedstep_centrino,thermal fan 4804 0