|CPU||Intel(R) Pentium(R) M processor 740 (1.73GHz 2 MB Cache 533 MHz FSB)||ok|
|RAM||1.024 MB PC2-3200 (2 x 512)||ok|
|hdd||FUJITSU MHV2080AH - 80GB, 5400 UPM||ok|
|DVD-R(W)||TSSTcorpCD/DVDW TS-L632B: DVD-Super-Multi Double Layer 5xDVDRAM, 8xDVD+R (2.4xDL), 4xDVD+RW, 8xDVD-R, 4xDVD-RW, 24xCD-R, 10xCD-RW||ok|
|Graphics||128 MB Intel Graphic Media Accelerator 900 (i915GM)||ok (i810)|
|Display||15" SXGA+ (1.400 x 1.050)||ok|
|Sound||Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 03)||ok (snd_intel8x0)|
|USB 1||Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI (rev 03)||ok|
|USB 2||Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 03)||ok|
|Firewire||Ricoh Co Ltd R5C552 IEEE 1394 Controller (rev 08)||not tested|
|LAN||Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)||ok|
|WLAN||Intel Corp. PRO/Wireless 2200BG (rev 05)||ok (ipw2200)|
|Modem||Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Modem Controller (rev 03)||not tested|
|PCMCIA||Ricoh Co Ltd RL5c476 II (rev b3)||not tested|
|ACPI||Suspend to disk/ram, lidclose, CPU frequency scaling||ok *|
|MD/SD-Slot||Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 17)
Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 08)
*: suspend to disk needs a workaround, see below
For more details have a look at the output of lspci, cat /proc/cpuinfo and lsmod.
The basic installation was pretty simple. But I didn't expect something else as Centrino notebooks are said to be pretty well supported by now. Also, tests in computer magazines confirmed that basically all devices of a similar Samsung model worked. And in the shop where I bought my model I checked with Knoppix that the soundchip is supported as that was the only major part I was unsure about.
Here is a short writeup of the installation process. I will go into detail on some aspects that didn't work out-of-the-box below.
/dev/hda1 * 1 2351 18876344 7 HPFS/NTFS /dev/hda2 2351 2613 2104515 c W95 FAT32 (LBA) /dev/hda3 2613 2744 1052257+ 82 Linux swap / Solaris /dev/hda4 2744 9678 55705387 f W95 Ext'd (LBA) /dev/hda5 2744 3788 8393931 83 Linux /dev/hda6 3789 4050 2104483+ 83 Linux /dev/hda7 4051 9678 45206878+ 83 LinuxMore details can be found in the /etc/fstab.
At the end of the installation process I ran the online update to apply the security patches available at that point.
Although the installation didn't show any errors, it turned out that the 1400x1050 resolution didn't work and 1280x1024 was used as a fallback. The solution to that was easy to find. There is a tool "855resolution" - and a package of the same name on the installation media - to patch the video BIOS.
lists the modes found in the video bios. 1400x1050 is not among them. So you just override a mode you don't need anyway. I chose the highest resolution mode neither the laptop display nor my desktop monitor support (mode "3c": 1920x1440). And as this setting is lost after shutting down the machine, I added the following line to /etc/init.d/boot.local
/usr/sbin/855resolution 3c 1400 1050
Here are a few benchmarks:
|nexuiz||18 - 78||800x600||all effects off except particles, decals|
|UT2003 - flyby-asbestos||9.68/27.68/632.48||800x600||details normal, effects on|
|UT2003 - flyby-asbestos||11.56/33.54/710.49||800x600||details normal, effects off|
|UT2003 - flyby-asbestos||11.49/34.62/690.94||800x600||details lowest, effects off|
|UT2003 - botmatch-antalus||3.39/6.46/20.36||800x600||details normal, effects on|
|UT2003 - botmatch-antalus||3.40/7.43/25.04||800x600||details normal, effects off|
|UT2003 - botmatch-antalus||3.64/11.21/27.24||800x600||details lowest, effects off|
|Enemy Territory - radar||9.9||800x600||normal quality|
While media players had sound, all games I tried complained about not working audio. That was fixed by adding my default user to group "audio".
To play CDs with xmms I had to configure the "CD Audio Player" input plugin in the preferences to use "Digital audio extraction".
I disabled the KDE startup and shutdown sounds in the control center to not annoy people when using the PC in public places.
Set zsh as default shell. You might want to copy my ~/.zshrc and ~/.alias files although some settings might not make much sense for others.
I redefined some keys, for example I like the left windows key to open the K-menu. For that I assigned "F20" to that key using xmodmap. The key manipulations are written to the file ~/.Xmodmap:
keycode 115 = F20 keycode 116 = slash keycode 117 = Alt_R add Mod1 = Alt_R
If I understood things correctly, ~/.Xmodmap is automatically evaluated when X is started. But KDE overrides the keyboard settings with its own, so I re-evaluate my configuration in a script I put into ~/.kde/Autostart that simply calls
One of the first things I do with a fresh linux installation is disabling services I don't need. Here of course it depends on the personal needs what can be disabled or not. I stopped these services (either via Yast or on the console with "chkconfig -s <servicename> off"):
After that the list of open ports looks like this: output of "netstat -tulpn". Note: a local address of "127.0.0.1" or "::1" means that this service doesn't listen to connections from outside the machine itself.
No action from my side was necessary, the touchpad worked out of the box:
I have set up my WLAN card to have a static IP and routing for my home setup (DHCP should make no big difference I guess). The wireless settings are on the second page of the card configuration in Yast. I entered my ESSID, set the authentication mode to WPA-PSK and entered my passphrase. The key input type is "Passphrase" as my wireless router only has this option. From then on, everything works fine (it seems there are problems if the passphrase contains spaces).
Later I will look into setting up network profiles. The need didn't arise so far.
I guess this is the most interesting part for a lot of people. The good news is: it works, albeit with a little drawback.
The SUSE default CPU profile is "dynamic", i.e. the CPU runs at 800 MHz, but if you start a program that needs more CPU power the machine will switch to the full 1.73 GHz. But you can simply override this by using the kpowersave tray icon and set the profile to either "performance" or "powersave" which will fix the clock speed to 1.73 GHz or 800 MHz, respectively.
Which speedstep kernel module to load is determined dynamically during boot time. I have set the variable CPUFREQD_MODULE in /etc/sysconfig/powersave/cpufreq to "speedstep_centrino" so that the test for the right module can be skipped each time the machine boots.
I did a test with
echo 3 > /proc/acpi/sleep
and everything went fine.
After pressing the power button, the laptop is back in a second.
So I decided to use suspend to ram as the action for closing the lid
(preconfigured was the screensaver).
For that I had to edit /etc/sysconfig/powersave/events and change the appropriate line to
In principle, S2D works easily by selecting "suspend to disk" from the kpowersave tray icon (or using "echo 4 > /proc/acpi/sleep" from the console). Pressing the power button then starts the resume process which ended on the KDM login screen in 1280x1024 resolution. So the 1400x1050 mode was the problem.
After some research I found that the suspend mechanisms allow individual services to be shut down and restarted for suspend. So I wrote a small script and put it under /etc/init.d/855resolution. It has to support the three actions "start", "stop" and "status". "start" does exactly the same as the line in the boot.local script. "stop" and "status" don't need to do anything, just return 0 (i.e. true) as exit code. To tell suspend to use it, change the appropriate line in /etc/powersave/sleep to
Unfortunately that's not sufficient.
The resume still leads to the KDM login screen, but this time at 1400x1050.
My explanation - although not sure if it's 100% correct - is that the 855resolution "service"
The best solustion I was able to come up is to edit the script /usr/lib/powersave/scripts/sleep_helper_functions. It defines a function "restore_after_sleep" where I added the 855resolution call right before the line that switches back to X.
/usr/sbin/855resolution 3c 1400 1050 &> /dev/null switch_to_X
It's not perfect, but it works. As long as the package "powersave" is not updated and the files gets overwritten, that is...
Just a few - maybe minor - things I like to share anyway ;-)
|© 2005-2006 Brack@The-One-Brack.org||Back to my linux on laptops page||Last modified: Sat Aug 22 20:19:19 CEST 2009|