This document describes how I installed and configured GNU/Linux (64-bit openSUSE 10.3 distribution) on a Dell Inspiron 1525 laptop. You may also be interested in my more recent guide on OpenSUSE 11.3 on a Dell Inspiron 1525.
The Inspiron 1525 is available in various configurations. My system has the following components:
|CPU||Intel Core 2 Duo T8300 (2.40 GHz, 800 MHz FSB, 3 MB L2 cache)|
|RAM||4096 MB 667 MHz Dual Channel DDR2 SDRAM (2×2048)|
|Hard disk||250 GB 5400 RPM SATA|
|Display||15.4" TFT widescreen; 1440×900 (WSXGA) resolution|
|Graphics controller||Intel 965 GM|
|Wireless LAN||Intel PRO/Wireless 3945ABG|
|DVD drive||TSSTcorp DVD+-RW TS-L632H|
|Sound||Intel 82801H (ICH8 Family) HD Audio Controller|
|Touchpad||AlpsPS/2 ALPS GlidePoint|
|Ports||IEEE 1394 (FireWire)|
|4× USB 2.0|
|memory card reader|
|Component or feature||Details|
|Suspend to disk||partially working|
|Suspend to RAM||not working|
|DVD||works out of the box|
|USB||works out of the box|
|Ethernet||works with kernel \>=2.6.23|
|WLAN||works with iwlwifi-kmp-default \>=1.2.0_22.214.171.124_ccj64-0.1|
|graphics||works out of the box|
|hard disk||works out of the box|
|sound||partially working with alsa-driver \>=20080531|
|memory card reader||not tested|
|touchpad||works out of the box|
|camera||works out of the box|
Most components and features work out of the box. Here is a description of some components which required some configuration, or which I have not yet gotten to work.
The Marvell 88E8040 network card was not recognized by the openSUSE 10.3 installer, which uses an older 2.6.22 Linux kernel. To get the network card to work, I used my wireless connection to install a 2.6.23 kernel from the jengelh repository. Here are step-by-step instructions:
Fill in the fields as follows: : Repository Name: suser-j.engelh : URL: http://ftp5.gwdg.de/pub/linux/misc/suser-jengelh/SUSE-10.3/
The variant of the Intel PRO/Wireless 3945ABG network card in the Inspiron 1525 is not supported by the outdated ipw3945 or iwl3945 drivers which come with openSUSE 10.3. However, upgrading to a more recent version of iwl3945 (iwlwifi-kmp-default-1.2.0_126.96.36.199_ccj64-0.1 and iwl3945-ucode-188.8.131.52-13) from the suser-jengelh repository (see above) fixes the problem. Make sure to either uninstall the ipw3945 packages, or configure the wireless card to use the iwl3945 module rather than the ipw3945 module in YaST.
There are many variants of the Intel 82801H (ICH8 family) sound card. The one used in my Inspiron 1525 is a STAC9228; it may not be fully supported yet, and I am still trying to get it to work properly.
The version of ALSA which ships with openSUSE 10.3 (1.0.14) does not support the sound card at all; no sound is produced. Upgrading to the 10.0.16 driver did not fix the problem. I downloaded, compiled, and installed a more recent snapshot of alsa-driver (20080531) from http://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/ (formerly ftp://ftp.suse.com/pub/projects/alsa/snapshot/driver/), upon which the sound now basically works, provided that the module is loaded with the option model=3stack. Here are step-by-step instructions:
Untar, compile, and install the snd-hda-intel module as follows:
$ tar xjvf alsa-driver-20080531.tar.bz2 (substitute the name
of the file you downloaded)
$ cd alsa-driver
$ ./configure --with-cards=hda-intel
$ sudo make install
If the driver fails to compile, then try an earlier snapshot. (Not all snapshots are guaranteed to compile.)
As root, add the following line to the file
options snd-hda-intel model=3stack
Reboot your machine.
$ sudo rcalsasound restart
There are a few minor problems with the sound. For one, the right headphone jack does not produce any output at all, so you will need to use the left jack. Another problem is that whenever the balance slider is moved to the right, the master volume drops proportionally. I have reported this as a Bug 0003987 on the ALSA bugtracking system.
Here are some pages with information on using the 82801H sound card under Linux:
The keyboard includes three volume control buttons, four media control buttons, a "Home" button, and various Fn-key combinations. The volume control buttons do not work out of the box; possibly they send standard key codes which can be mapped with xkb. The other five special buttons I haven't tested yet.
Fn-Up and Fn-Down correctly increase and decrease the LCD brightness, respectively. Fn-F1 correctly suspends to disk. Fn-F3 is presumably meant to suspend to RAM, but this doesn't seem to work. Fn-F8 switches between the local, external, and dual display modes; I haven't tested this.
The touchpad works out of the box, though it needs some configuration. The right edge of the touchpad acts like a vertical scrollwheel. Presumably the bottom edge is supposed to act like a horizontal scrollwheel, but the default mapping seems to instead be Alt-Left and Alt-Right, which causes no end of grief in web browsers. I suppose this can be fixed by tweaking the X.org configuration.
The modem does not show up in the YaST Hardware Information application, so I assume it is not working out of the box. However, I haven't done any extensive testing.
I can't find the built-in webcam in the YaST Hardware Information application, but it is recognized in the boot log and seems to work in applications such as Skype and Kopete. I haven't tested its built-in microphone.
Basic ACPI functions such as the battery monitor and turning off the LCD screen seem to work. Suspend to RAM does not work at all. Suspend to disk seems to work some of the time; other times it gets stuck while suspending and I have to power off the machine. I haven't yet tried troubleshooting these problems. Please let me know if you know how to get suspend working properly.
It is possible that the problems with suspend result from a BIOS bug; according to the DellLinuxWiki, BIOS versions A09 and above cause problems with suspend. My laptop came with version A11 preinstalled.