Difference between revisions of "UMID SE"

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'''work in progress 24 DEC 2011'''
#redirect [[ArchWiki:Archive]]
This guide assumes that you are experienced in installing Archlinux. If you are not experienced, please read this guide in parallel with the [[Beginners' Guide]] or the [[Official Installation Guide]]. No assumptions are made on your desired environment (DE/WM). Note that the SSD will completely be wiped if you follow this guide without alterations.
Boot the archlinux installer from the USB medium and log in as {{ic|root}}.
==Installing Archlinux==
===Set up a wireless connection===
Since you don't have any ethernet, you'll need to manually configure your network before starting the setup. Here, we assume that the wlan is not encrypted:
ip link set wlan0 up
iwconfig wlan0 essid "your_wlan_essid"
dhcpcd wlan0
If your wlan is encrypted, follow the instructions in the  [[Beginners' Guide#Setup wireless in the live environment (optional)|Beginner's Guide]]. If it's not encrypted but requires to login at a captive portal, you can use {{ic|elinks}} to enter your credentials.
===Partition the SSD===
You'll also need to manually format the SSD before using the installer. Use GPT as described in the [[SSD#Using GPT - RECOMMENDED METHOD|SSD Article]]. This ensures that your partitions are properly aligned. Install and run it:
pacman -S gptfdisk
gdisk /dev/sda
Type {{ic|o}} to clear out the partition table and then create at least 3 partitions by typing {{ic|n}} and answering the questions (type {{ic|?}} or {{ic|m}} for help). You need at least a 2MiB Partition at the beginning for the boot loader as well as a bit more than 1GiB of swap space to be able to use hibernation. Your partition table should look something like this in the end (for example using 8GiB for {{ic|/}} and the rest for {{ic|/home}} :
Number  Start (sector)    End (sector)  Size      Code  Name
  1            2048            6143  2.0 MiB    EF02  BIOS boot partition
  2            6144        2463743  1.2 GiB    8200  Linux swap
  3        2463744        19240959  8.0 GiB    8300  Linux filesystem
  4        19240960        61865950  20.3 GiB    8300  Linux filesystem
Type {{ic|w}} to write the partition table.
===Run the installer===
Progress through the installer as usual, but mind these things:
* When configuring the hard drive, select to configure the mountpoints manually and choose the mountpoints accordingly. Regarding filesystems, you can select {{ic|ext2}} for the BIOS boot partition. For the root and any other regular partitions {{ic|ext4}} is a good choice.
* You absolutely have to select {{ic|wireless-tools}} from core to be installed in order to be able to connect to the wlan in your freshly installed system. You may also want to select netcfg.
* When editing the config files, edit /etc/fstab and add the {{ic|noatime,nodiratime,discard}} options to your ext4 partitions. Also remove {{ic|network}} from the {{ic|DAEMONS}} array in {{ic|/etc/rc.conf}}.
* Skip the bootloader installation, exit the installer and do not reboot!
===Manually install the bootloader===
Prepare the environment:
cp /etc/resolv.conf /tmp/install/etc/resolv.conf
modprobe dm-mod
mount -o bind /dev /mnt/dev
mount -t proc /proc /mnt/proc/
mount -t sysfs /sys /mnt/sys/
Chroot into your fresh installation:
chroot /mnt bash
Install grub2:
pacman -Syy
rm -rf /boot/grub
pacman -S grub2-bios
grub_bios-install --boot-directory=/boot --no-floppy --recheck --debug /dev/sda
grub-mkconfig -o /boot/grub/grub.cfg
Now you're ready to reboot!
==Configure the fresh system==
===Configure CPU scaling and thermal monitoring===
The UMID SE can get quite hot because of the relatively powerful CPU and lack of air flow. This happens especially when charging the batteries. Keep an eye on the thermals at all times. Refer to [[#dzen|dzen]] for an example on how to do this efficiently.
Install [[Cpufreq|cpufrequtils]] and [[Lm_sensors|lm_sensors]]:
pacman -S cpufrequtils lm_sensors
Edit the governor line in {{ic|/etc/conf.d/cpufreq}} selecting the {{ic|ondemand}} governor. No other options are required.
Run sensors-detect and hit {{ic|enter}} answering YES to all questions.
In {{ic|/etc/rc.conf}} add {{ic|acpi_cpufreq}} to the {{ic|MODULES}} array and {{ic|@cpufreq @sensors}} to the DAEMONS array:
DAEMONS=(syslog-ng @crond @cpufreq @sensors)
Reboot to apply the changes. As a quick way of checking what's going on you can run something like this:
watch -n 0.5 "cat /proc/cpuinfo | grep MHz; sensors"
===Install the graphics drivers===
After a reboot into your new system, install the drivers required for the poulsbo chipset. There are several drivers and they're all terrible. The probably best option at the time of writing is the pbs_gfx driver used with fbdev. The performance (for playing videos for example) will nevertheless be awful but it works well for regular work. Install it as follows:
Add {{ic|psb_gfx}} to {{ic|MODULES}} in {{ic|/etc/mkinitcpio.conf}} and rebuild the kernel initramfs:
mkinitcpio -p linux
Install the fbdev driver:
You should now be able to install and run X.
===Install all your usual stuff===
Install Xorg and whatever DE/WM you want to use. Launch X.
===Configure touch screen and optical mouse===
To change the way the input data from the touch screen is presented to the system, add this to {{ic|/etc/rc.local}}:
echo -n serio_raw>/sys/bus/serio/devices/serio1/drvctl
===Configure all special keys===
Create a file {{ic|/lib/udev/keymaps/umid-se}} containing:
0xEE battery          # Fn+Q
0xDF sleep            # Fn+W
0xD5 switchvideomode  # Fn+E
0xF0 record            # Fn+R
0xF6 camera            # Fn+T
0xF9 brightnessdown    # Fn+A
0xF8 brightnessup      # Fn+S
0xA0 mute              # Fn+D
0xAE volumedown        # Fn+F
0xB0 volumeup          # Fn+G
0xFC wlan              # Fn+J
Edit {{ic|/lib/udev/rules.d/95-keymap.rules}} adding this after {{ic|LABEL="keyboard_vendorcheck"}}:
ENV{DMI_VENDOR}=="UMiDCorp", ATTR{[dmi/id]product_name}=="M-BOOK", RUN+="keymap $name umid-se"
The above vendor and product IDs can be found under {{ic|/sys/class/dmi/id/*}}. Reboot to apply the changes.
===Configure suspend and hibernation===

Latest revision as of 09:06, 26 November 2017

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