My Linux on Thinkpad T41p Guide (2)
Since first I wrote my Gentoo on IBM Thinkpad T41p guide, there are numerous updates to involved software. Features has been added, bugs has been fixed and new bugs appears. Some parts of the old guide has become irrelevant, outdated and simply wrong.
The following is my attempt to update the guide to reflect the current situation.
Display
I’m now switching to fglrx as it now supports software suspend. Now, 3D acceleration, suspending, and hopefully multi head work at the same time. In /etc/X11/xorg.conf
, I added Option "dpms"
under “Monitor” section to enable DPMS. I also added Option "UseInternalAGPGART" "on"
under “Device” section to use kernel’s Agpgart. For some reason, the Agpgart that comes with fglrx is not as stable as the kernel’s. Added DisplaySize 474 356
under “Monitor” section to keep resolution on 75×75 DPI.
Xv by default is not enabled on fglrx. To enable it, use Option "VideoOverlay" "on"
and Option "OpenGLOverlay "off"
under section “Device”.
To automatically put the video adapter in power saving mode, I put Option "PowerState" "1"
under “Device” section. To get a list of available modes, use aticonfig --list-powerstates
. To disable power saving mode on the fly, use aticonfig --set-powerstate=2 --effective=now
. Please note that different video card has different power saving power states, be sure to use aticonfig --list-powerstates
to see the available power states on your model. My Mobility FireGL T2 has two powerstates, under low voltage mode glxgears runs with a little more than 1000 FPS, and under default state it runs with about 2100 FPS.
References:
- HOWTO ATI Drivers on Gentoo-Wiki
- ATI Unofficial ATI Linux Driver Wiki
- Fglrx on ThinkWiki
- Problems with fglrx on ThinkWiki
- Gentoo ATI Radeon FAQ
- How to make use of Graphic Chips Power Management features on ThinkWiki
CPU Frequency Scaling
With the introduction of ‘conservative’ CPU frequency governor in 2.6.12, it is no longer required to use userspace CPU scaling daemon such as powernowd. Now I just let laptop mode tools change CPU governor to ‘conservative’ when on battery and ‘ondemand’ when on AC power. The cpufreq-conservative
and cpufreq-ondemand
need to be loaded either statically or loaded as module.
Relevant snippet from /etc/laptop-mode/laptop-mode.conf
:
# Should laptop mode tools control the maximum CPU frequency?
CONTROL_CPU_FREQUENCY=1
# Legal values are "slowest" for the slowest speed that your
# CPU is able to operate at, "fastest" for the fastest speed,
# "medium" for some value in the middle, or any value listed in
# /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_frequencies.
BATT_CPU_MAXFREQ=medium
BATT_CPU_MINFREQ=slowest
BATT_CPU_GOVERNOR=conservative
LM_AC_CPU_MAXFREQ=fastest
LM_AC_CPU_MINFREQ=slowest
LM_AC_CPU_GOVERNOR=ondemand
NOLM_AC_CPU_MAXFREQ=fastest
NOLM_AC_CPU_MINFREQ=slowest
NOLM_AC_CPU_GOVERNOR=ondemand
References:
- How to make use of Dynamic Frequency Scaling on ThinkWiki.
Disabling Disk Syncing
Laptop mode tries to delay write to hard drive but some programs insist on syncing every minute or so. Libnosync solves the problem. Compile it, put libnosync.so
in /usr/lib and add /usr/lib/libnosync.so
in /etc/ld.so.preload
.
Embedded Security Subsystem
This works with tpm_atmel
module, it created device /dev/tpm0
. However I have no real use for it.
References:
- Embedded Security Subsystem on ThinkWiki
- Tpm on ThinkWiki
- Tpmdd on ThinkWiki
Hard Drive Active Protection System
This one hasn’t matured yet. It works but requires no small amount of tinkering:
- Install hdaps driver. No problem, any recent kernel already includes this. The driver is called
hdaps
. - Patch the kernel with disk protection kernel patch.
- Install
hdapsd
user space daemon. Gentoo Ebuild. - Install
khdapsmon
KDE tray application. Download and Gentoo Ebuild. - Upgrade the hard drive BIOS.
- Patch the kernel with unload capabilities check patch.
The last two steps are probably specific only to early version of this hard drive model (Hitachi HTS726060M9AT00).
References:
- How to protect the harddisk through APS on ThinkWiki
- HDAPS on ThinkWiki
[...] *Note Some parts of this guide is outdated. Please refer to update to this document for more information. [...]
ah curang di pingback sendiri, gag bs komen #1 :(
wei…. abeeee buncit. kikikiki linux emang aneh ya mas pri. tapi walo aneh… juga begitu mengagumkan. kie skalian test ubuntu. masih pake yg live :D
#2 & #3 itu pasangan ya ?
*kabooor*
Hmmmm… Harus nunggu punya Thinkpad nih :(
Pokoknya comment dulu, baca belakangan \:d/
srinsot mana neh
Wah sing koyo ngene aku ra donk:-?[-(
bau bau nya si #4 cemburu tuh :-?:-“
gag ngerti kayak ginian.. :(( masa depan suram…
om pri…
kalo ada how-to mengenai ngoprek linux – big/huge memory > 4GB pada IA32… pls share donk….
Memori > 4 GB di IA32? WDF! apa hubungannya ama Linux? ganti aja mesinnya pake 64, linux gag perlu dioprek2 lg :d
#11: belum pernah pake memori sebanyak itu :D
om, gimana Xgl+glxcompmgr/compiz nya? hihihih..
Gentoo? Noo! Alergi ah nginstall gentoo… lama banget compile systemnya hehehe :d
skrinsyutnya duonkkhh…. :d
kata orang nginstall gentoo lumayan bikin pusing yah.. hmm.. lom pernah sih :-?
abis komen langusung manyun. sigh… gua pake G41 yang super duper BIG dan BERATS. *gak fokus* :((
#4 eh, situ jealous yah?
FHM msh nganggur tuh..
*tendang renceh ke pangkuan fahmi*
Tanpa SCRINSHUT adalah BASBANG™ :D
hehe.. linux is the best !!! :”>
SUSE, UBUNTU, GENTOO
Namanya aja Linux, Suse abis, Bikin Buntu, getooh!
:d
Hii… syerem… koq milih linuxnya yg susah2 gitu sih? :p napa ga milih yg simpel kayak SimplyMepis, Xandros dsb.. (padahal sih uda nyobain ga semuanya enakeun gara terlalu simple kali ya?) tau ah binun nih mo pake distro apaan lagi ya..? Distro 347 aja kale ye.. :D
im using fglrx_6_8_0-8.21.7-1.i386 for 3D accelerator runing well in my desktop
makanya pakailah XP .. *halah*
— padahal aslinya karena kebingungan pingin tau linux ngga bisa bisa
Tes browser ajah :D
Seharusnya muncul nama browser: “Off by One”
bener gak ya? :-?