2008.11.26
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/GME, 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 [Golan] 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 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 18)
hdaps kernel module is available and can be loaded.
hdapsd however does not start, reports missing
/sys/block/hda/queue/protect.
tp_smapi not tested.
Ubuntu 8.10 “PC (Intel x86) desktop CD” boots normally using external IBM USB DVD-ROM/CD-RW. SATA hard disk is recognized. Install proceeds without a problem.
Xorg is automatically uses intel driver. From
/var/log/Xorg.0.log:
... ... ... (II) Loading /usr/lib/xorg/modules/drivers//intel_drv.so (II) Module intel: vendor="X.Org Foundation" compiled for 1.5.2, module version = 2.4.1 Module class: X.Org Video Driver ABI class: X.Org Video Driver, version 4.1 (II) intel: Driver for Intel Integrated Graphics Chipsets: i810, i810-dc100, i810e, i815, i830M, 845G, 852GM/855GM, 865G, 915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, Mobile Intel® GM45 Express Chipset, Intel Integrated Graphics Device, G45/G43, Q45/Q43 ... ... ...
DRI works (glxinfo|grep rendering).
ALSA sound works as long as modem is not disabled in BIOS.
Just after the install, running on battery (80% charge), screen at maximum brigtness and WiFi connected to access point with 80% signal strength, PowerTOP reports 12.6W:
# powertop --dump PowerTOP 1.10 (C) 2007, 2008 Intel Corporation Collecting data for 15 seconds Cn Avg residency C0 (cpu running) ( 1.4%) C0 0.0ms ( 0.0%) C1 halt 0.0ms ( 0.0%) C2 0.2ms ( 0.0%) C3 23.8ms (98.5%) P-states (frequencies) 1500 Mhz 0.0% 1000 Mhz 100.0% Wakeups-from-idle per second : 42.2 interval: 15.0s Power usage (ACPI estimate): 12.6W (2.2 hours) Top causes for wakeups: 49.9% ( 22.7): iwl3945 16.5% ( 7.5) : Rescheduling interrupts 4.8% ( 2.2) : acpi 4.4% ( 2.0) multiload-apple : schedule_timeout (process_timeout) 4.0% ( 1.8) gnome-terminal : schedule_timeout (process_timeout) 2.9% ( 1.3) : function call interrupts 2.2% ( 1.0) Xorg : schedule_timeout (process_timeout) 2.2% ( 1.0) ntpd : do_setitimer (it_real_fn) 1.2% ( 0.5) iwl3945 : ieee80211_sta_work (ieee80211_sta_timer) 1.0% ( 0.5) : eth0 1.0% ( 0.5) : ahci 1.0% ( 0.5) pulseaudio : schedule_timeout (process_timeout) 1.0% ( 0.5) : neigh_table_init_no_netlink (neigh_periodic_timer) 1.0% ( 0.5) : e1000_intr_msi (e1000_watchdog) 0.9% ( 0.4) NetworkManager : schedule_timeout (process_timeout) 0.9% ( 0.4) gnome-panel : schedule_timeout (process_timeout) 0.9% ( 0.4) : neigh_table_init_no_netlink (neigh_periodic_timer) 0.6% ( 0.3) gnome-power-man : schedule_timeout (process_timeout) 0.6% ( 0.3) nautilus : schedule_timeout (process_timeout) 0.4% ( 0.2) : page_writeback_init (wb_timer_fn) 0.4% ( 0.2) update-notifier : schedule_timeout (process_timeout) 0.3% ( 0.1) : __enqueue_rt_entity (sched_rt_period_timer) 0.3% ( 0.1) : sta_info_start (sta_info_cleanup) 0.3% ( 0.1) gnome-settings- : schedule_timeout (process_timeout) 0.1% ( 0.1) : PS/2 keyboard/mouse/touchpad 0.1% ( 0.1) Xorg : do_setitimer (it_real_fn) 0.1% ( 0.1) avahi-daemon : schedule_timeout (process_timeout) 0.1% ( 0.1) nm-applet : schedule_timeout (process_timeout) 0.1% ( 0.1) : queue_delayed_work (delayed_work_timer_fn) 0.1% ( 0.1) touch : start_this_handle (commit_timeout) 0.1% ( 0.1) hald : schedule_timeout (process_timeout) 0.1% ( 0.1) : fib6_add (fib6_gc_timer_cb) Suggestion: increase the VM dirty writeback time from 5.00 to 15 seconds with: echo 1500 > /proc/sys/vm/dirty_writeback_centisecs This wakes the disk up less frequenty for background VM activity Suggestion: Enable SATA ALPM link power management via: echo min_power > /sys/class/scsi_host/host0/link_power_management_policy or press the S key. Suggestion: Enable wireless power saving mode by executing the following command: echo 5 > /sys/bus/pci/drivers/iwl3945/0000:03:00.0/power_level This will sacrifice network performance slightly to save power. Suggestion: Enable laptop-mode by executing the following command: echo 5 > /proc/sys/vm/laptop_mode ... ... ...
After following the suggestions above, power usage drops to 10.7W (again, 2.6 hours is with battery at 80% charge, Wi-Fi connected and screen at max. brightness).
PowerTOP 1.10 (C) 2007, 2008 Intel Corporation Collecting data for 15 seconds Cn Avg residency C0 (cpu running) ( 1.4%) C0 0.0ms ( 0.0%) C1 halt 0.0ms ( 0.0%) C2 0.7ms ( 0.1%) C3 19.8ms (98.5%) P-states (frequencies) 1500 Mhz 2.0% 1000 Mhz 98.0% Wakeups-from-idle per second : 50.7 interval: 15.0s Power usage (ACPI estimate): 10.7W (2.6 hours) Top causes for wakeups: 42.2% ( 21.6): iwl3945 20.1% ( 10.3) : Rescheduling interrupts 8.0% ( 4.1) : acpi 4.3% ( 2.2) : function call interrupts 3.9% ( 2.0) multiload-apple : schedule_timeout (process_timeout) 3.9% ( 2.0) Xorg : schedule_timeout (process_timeout) 3.4% ( 1.7) gnome-terminal : schedule_timeout (process_timeout) 2.0% ( 1.0) ntpd : do_setitimer (it_real_fn) 1.8% ( 0.9) : ahci 1.0% ( 0.5) : eth0 1.0% ( 0.5) : neigh_table_init_no_netlink (neigh_periodic_timer) 1.0% ( 0.5) : e1000_intr_msi (e1000_watchdog) 1.0% ( 0.5) pulseaudio : schedule_timeout (process_timeout) 1.0% ( 0.5) iwl3945 : ieee80211_sta_work (ieee80211_sta_timer) 0.8% ( 0.4) NetworkManager : schedule_timeout (process_timeout) 0.7% ( 0.3) gnome-power-man : schedule_timeout (process_timeout) 0.7% ( 0.3) : neigh_table_init_no_netlink (neigh_periodic_timer) 0.5% ( 0.3) : __enqueue_rt_entity (sched_rt_period_timer) 0.5% ( 0.3) avahi-daemon : schedule_timeout (process_timeout) 0.5% ( 0.3) gnome-panel : schedule_timeout (process_timeout) 0.4% ( 0.2) update-notifier : schedule_timeout (process_timeout) 0.1% ( 0.1) : PS/2 keyboard/mouse/touchpad 0.1% ( 0.1) Xorg : do_setitimer (it_real_fn) 0.1% ( 0.1) : page_writeback_init (wb_timer_fn) 0.1% ( 0.1) iwl3945/0 : queue_delayed_work (delayed_work_timer_fn) 0.1% ( 0.1) touch : start_this_handle (commit_timeout) 0.1% ( 0.1) : sta_info_start (sta_info_cleanup) 0.1% ( 0.1) : laptop_io_completion (laptop_timer_fn) 0.1% ( 0.1) : queue_delayed_work (delayed_work_timer_fn) 0.1% ( 0.1) console-kit-dae : schedule_timeout (process_timeout) ... ... ...
Kernel modules as loaded after the install:
$ lsmod Module Size Used by aes_i586 15744 1 aes_generic 35880 1 aes_i586 af_packet 25728 4 i915 38144 2 drm 86056 3 i915 binfmt_misc 16904 1 ppdev 15620 0 ipv6 263972 12 acpi_cpufreq 15500 0 cpufreq_stats 13188 0 cpufreq_powersave 9856 0 cpufreq_conservative 14600 0 cpufreq_userspace 11396 0 cpufreq_ondemand 14988 2 freq_table 12672 3 acpi_cpufreq,cpufreq_stats,cpufreq_ondemand pci_slot 12552 0 container 11520 0 sbs 19464 0 sbshc 13440 1 sbs wmi 14504 0 iptable_filter 10752 0 ip_tables 19600 1 iptable_filter x_tables 22916 1 ip_tables sbp2 29324 0 parport_pc 39204 0 lp 17156 0 parport 42604 3 ppdev,parport_pc,lp pcmcia 43052 0 thinkpad_acpi 66176 0 arc4 9984 2 ecb 10880 2 nvram 16524 1 thinkpad_acpi serio_raw 13444 0 evdev 17696 12 crypto_blkcipher 25476 1 ecb psmouse 45200 0 snd_hda_intel 381616 3 yenta_socket 31756 1 sdhci_pci 15360 0 sdhci 23940 1 sdhci_pci mmc_core 58268 1 sdhci snd_pcm_oss 46848 0 snd_mixer_oss 22784 1 snd_pcm_oss rsrc_nonstatic 19072 1 yenta_socket pcspkr 10624 0 snd_pcm 83204 2 snd_hda_intel,snd_pcm_oss pcmcia_core 43412 3 pcmcia,yenta_socket,rsrc_nonstatic iwl3945 98804 0 iTCO_wdt 18596 0 snd_seq_dummy 10884 0 iTCO_vendor_support 11652 1 iTCO_wdt rfkill 17176 3 thinkpad_acpi,iwl3945 mac80211 216820 1 iwl3945 snd_seq_oss 38528 0 led_class 12164 2 thinkpad_acpi,iwl3945 battery 18436 0 ac 12292 0 cfg80211 32392 2 iwl3945,mac80211 video 25104 0 output 11008 1 video snd_seq_midi 14336 0 snd_rawmidi 29824 1 snd_seq_midi snd_seq_midi_event 15232 2 snd_seq_oss,snd_seq_midi snd_seq 57776 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event irda 199612 0 crc_ccitt 10112 1 irda snd_timer 29960 2 snd_pcm,snd_seq snd_seq_device 15116 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq button 14224 0 snd 63268 15 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device intel_agp 33724 1 soundcore 15328 1 snd agpgart 42184 3 drm,intel_agp shpchp 37908 0 pci_hotplug 35236 1 shpchp snd_page_alloc 16136 2 snd_hda_intel,snd_pcm ext3 133384 1 jbd 55444 1 ext3 mbcache 16004 1 ext3 pata_acpi 12160 0 sd_mod 42264 4 crc_t10dif 9984 1 sd_mod sg 39732 0 ata_piix 24580 0 ahci 37132 3 ata_generic 12932 0 libata 177312 4 pata_acpi,ata_piix,ahci,ata_generic scsi_mod 155212 4 sbp2,sd_mod,sg,libata ohci1394 37936 0 ehci_hcd 43404 0 ieee1394 96324 2 sbp2,ohci1394 uhci_hcd 30736 0 usbcore 149104 3 ehci_hcd,uhci_hcd e1000e 112680 0 dock 16656 1 libata thermal 23708 0 processor 42156 4 acpi_cpufreq,thermal fan 12548 0 fbcon 47648 0 tileblit 10880 1 fbcon font 16512 1 fbcon bitblit 13824 1 fbcon softcursor 9984 1 bitblit fuse 60828 5