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This is a compatibility guide to running Linux with the Fujitsu-Siemens Amilo Pi2540 laptop.
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|Name||Fujitsu Amilo Pi2540|
|Processor||Intel Pentium Dual-Core T2370 @ 1.73 GHz (also seems to come with different, similar processors)|
|Screen||15,6“ 1280×800 (WXGA)|
|RAM||1024 MB DDR2 667MHz|
|HDD||250GB 5400rpm SATA-150 HDD|
|Optical Drive||TSST TS-L632H DVD burner with double layer support|
|Graphics||AMD Mobility Radeon HD2400|
|Network||10/100 Mbps LAN, Wireless, 56K V.92 fax modem)|
|Screen||Yes||Brightness adjustment needs a relatively new kernel (3.11 works, a bit older might work too)|
|HDD||Not Tested||Used a Samsung SSD 840 on the SATA-150 connection, works fine (at SATA-150 speed of course)|
|Graphics Chip||Yes||See notes|
|DVI Port||Yes||DVI-D, so a DVI-to-VGA adapter won't work|
|Built-in Microphone||Not Tested|
|Headphone Jack||Yes||Also seems to support SPDIF out|
|Microphone Jack||Not Tested||Microphone jack is also a line-in jack|
|Wireless||Not Tested||Used a Atheros AR5007EG instead|
|Modem||Not Tested||Doesn't appear in lspci|
|ExpressCard Slot||Not Tested|
|Webcam||No||Didn't test extensively|
This laptop was tested with Debian 7 “wheezy” and Ubuntu 12.04 LTS. Prior to installing, the BIOS was updated to version 1.15. The fan in the laptop somehow seems to be connected to the graphics chip. Without proper dynamic power management for the radeon graphics, the fan will spin at full speed after some time.
For both aforementioned distributions, a few changes were needed in order to make the fan quiet:
- an upgrade to at least kernel 3.11.x
- the kernel needs to boot with the parameter “radeon.dpm=1” in GRUB
- an upgrade of the linux-firmware packages (I used version 0.40 from unstable, but the ones from wheezy-backport should work too)
This will enable the new dynamic power management for the open-source radeon driver. Without these steps, changing the brightness of the screen with the Fn keys will cause a kernel panic and the fan will either be off or on at full speed.
These changes should no longer be necessary with newer distributions shipping with kernel 3.13 or higher. If you can get the closed-source fglrx drivers to work, then the fan should go quiet too, but I didn't bother with those.
The Fujitsu Amilo Pi2540 certainly doesn't work right out-of-the-box even five years after its release, but finally the addition of dynamic power management to the open-source radeon driver changes that. I also find it weird that the fan speed seems to depend entirely on the temperature of the GPU instead of the CPU. by: http://katabijak.co/