Computing/Linux/Ubuntu

Reference

• Ubuntu Documentation
• Ubuntu Wiki
• Ubuntu Guide
  • Ubuntu Feisty
• Ubuntu Forums
• Ubuntu Daily
• Ubuntu Geek - Tips, Howtos, Tutorials and Articles about Ubuntu Linux
• Ubuntu in Launchpad - forums, bug reports, etc

Downloading

• Torrents
• MIT Media Lab Ubuntu mirror

Gutsy Gibbon

• Tour of 7.10
• 7.04 to 7.10 upgrade guide
• Reviews: Wired, Slashdot

Installation notes

• Ubuntu How-To from alma.edu
• Ubuntu How-To from cornell.edu
• My Ubuntu Installation
• Skype or use Medibuntu repository

Graphics

ATI

• ATI fglrx proprietary driver
• Proprietary drivers in Feisty
• ATI & Kernel 2.6 from ArchLinux wiki
• Radeon won't work on AIGLX because of its proprietary drivers?

Hitachi CML174SXW

xorg.conf entry:

Section "Monitor"
Identifier "CML174SXW"
HorizSync 64.0 - 80.0
VertRefresh 60.0 - 75.0

# V-freq: 75.00 Hz // h-freq: 80.42 KHz
Modeline "1280x1024" 151.83 1280 1360 1544 1888 1024 1024 1027 1072

Additional software repositories

• MIT Media Lab Ubuntu mirror - contains the various Ubuntu releases

• /etc/apt/sources.list:

## PLF REPOSITORY (Unsupported.  May contain illegal packages.  Use at own risk.)
## Medibuntu - Ubuntu 7.04 "feisty fawn" (Acroread, Google Earth, etc)
## Please report any bug on https://launchpad.net/products/medibuntu/+bugs
deb http://medibuntu.sos-sts.com/repo/ feisty free non-free
#deb-src http://medibuntu.sos-sts.com/repo/ feisty free non-free

## CANONICAL COMMERCIAL REPOSITORY (Hosted on Canonical servers, not Ubuntu
## servers. RealPlayer10, Opera, DesktopSecure and more to come.) 
deb http://archive.canonical.com/ubuntu feisty-commercial main

Miscellaneous

update-alternatives - maintain symbolic links determining default commands

Hardware

Config file locations:

/etc/modprobe.d/blacklist
/etc/default/linux-restricted-modules-common

Troubleshooting

• Problem: CDRW is not recognized

Error message in /var/log/messages: ata2.00: failed to set xfermode (err_mask=0x4)

• Solution from Feisty doesn't recognize cd burner:

Add the word 'irqpoll' (without quotes) to the kernel line in /boot/grub/menu.lst

• Problem: Xorg starts up but no DRI with ATI Radeon 9600 Pro, Intel i875P chipset, Ubuntu Feisty

Error in /var/log/messages: unable to acquire AGP, error "xf86_ENODEV", cannot init AGP

• Solutions:
  • A generic solution from ATI: X Fails to Load on Systems with Linux Kernel Version 2.6.x
  • An exact solution that worked: AGP not detected on Intel 8285P and E7205 chipsets using kernels higher than 2.6.17

# rmmod i82875p_edac

# rmmod edac_mc

# rmmod fglrx

# rmmod intel-agp (or another appropriate module from /lib/modules/`uname -r`/kernel/drivers/char/agp)

# rmmod agpgart

# modprobe agpgart

# modprobe intel-agp (or another appropriate module from /lib/modules/`uname -r`/kernel/drivers/char/agp)

# modprobe fglrx

blacklist the modules e7xxx_edac and edac_mc; e.g., add the following two lines at the beginning of /etc/modprobe.d/blacklist:

blacklist i82875p_edac

blacklist edac_mc