1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Ubuntu Nearing X Server Not Running As Root

X.Org

Published on 25 June 2010 11:20 AM EDT
Written by Michael Larabel in X.Org
2 Comments

Based upon a recent email to the X.Org developers' mailing list, Canonical is nearing the point of one of their goals for Ubuntu 10.10 of a rootless X Server, or being able to run the X.Org Server without root privileges.

All that's left to accomplish within the Ubuntu land according to Canonical's Christopher James Rogers is working out a /dev/backlight device interface that udev would set the appropriate permissions on for the user. The /proc/mtrr may also need to be handled too, but Rogers doesn't believe any of the drivers (at least the main KMS drivers) are using this interface. With all of the necessary prerequisites addressed, when starting the X Server they will have a check to see if kernel mode-setting is being used, if /dev/backlight exists, and if /dev/input/* has appropriate user permissions. If all conditions are true, the X.Org Server would not be run as the root user, which leads to better security. Of course, this feat has already been achieved by other Linux distributions such as Moblin and now MeeGo.

This would largely help out those with the open-source ATI, Intel, and Nouveau drivers that use kernel mode-setting while those using non-KMS drivers, including the binary drivers from ATI and NVIDIA, would still be running their X Server as root.

The mailing list thread discussing this can be found on xorg-devel. There is also the Maverick blueprint discussing this likely feature of Ubuntu 10.10. Other details can also be found on the Ubuntu Wiki.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. Trying The Configurable 45 Watt TDP With AMD's A10-7800 / A6-7400K
  2. Sumo's Omni Gets Reloaded
  3. AMD A10-7800 & A6-7400K APUs Run Great On Linux
  4. Radeon Gallium3D Is Running Increasingly Well Against AMD's Catalyst Driver
Latest Linux Articles
  1. AMD's RadeonSI Driver Sped Up A Lot This Summer
  2. Intel's Latest Linux Graphics Code Competes Against OS X 10.9
  3. Intel Sandy Bridge Gets A Surprise Boost From Linux 3.17
  4. Open-Source Radeon Graphics Have Some Improvements On Linux 3.17
Latest Linux News
  1. GNOME/GTK+ Human Interface Guidelines Updated
  2. The Widely-Criticized New Commercial Linux Distro Is Now On Kickstarter
  3. CUDA 6.5 Is Doing Great For Blender
  4. Wayland & Weston 1.6 Alpha Released
  5. Nouveau Gets Improved Re-Clocking Handling For Select GPUs
  6. A New First-Person Mystery Game Might Be Coming To Linux
  7. Patch By Patch, LLVM Clang Gets Better At Building The Linux Kernel
  8. VC4 Gallium3D Driver Now Handles X With GLAMOR
  9. Opera 25 Development Release For Linux
  10. Steam Now Supports VA-API For In-Home Game Streaming
Latest Forum Discussions
  1. OSS radeon driver for A10-7850K (Kaveri)
  2. Btrfs Gets Talked Up, Googler Encourages You To Try Btrfs
  3. Systemd 216 Piles On More Features, Aims For New User-Space VT
  4. American Citizens running AMOK for food stamps
  5. What Linux Distribution Should Be Benchmarked The Most?
  6. Company I work for is looking to contribute to Open Source projects... but wrongly?
  7. Microsoft vs. Campaign
  8. Updated and Optimized Ubuntu Free Graphics Drivers