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. NVIDIA GeForce GTX 970 Offers Great Linux Performance
  2. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  3. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
  4. AMD Radeon R9 285 Tonga Performance On Linux
Latest Linux Articles
  1. 6-Way Ubuntu 14.10 Linux Desktop Benchmarks
  2. Ubuntu 14.10 XMir System Compositor Benchmarks
  3. Btrfs RAID HDD Testing On Ubuntu Linux 14.10
  4. Ubuntu 14.10 Linux 32-bit vs. 64-bit Performance
Latest Linux News
  1. Coreboot Now Has Support For Intel Broadwell Hardware
  2. Enlightenment's EFL 1.12 Alpha Has Evas GL-DRM Engine, OpenGL ES 1.1 Support
  3. GTK+ Lands Experimental Backend For Mir Display Server
  4. Ubuntu 14.10 Officially Released
  5. Mesa 10.4 Might Re-Enable HyperZ For R600g/RadeonSI
  6. Intel GVT-g GPU Virtualization Moves Closer
  7. GTK+ 3.16 To Bring Several New Features
  8. Debian 8.0 Jessie Has Many Multimedia Improvements
  9. What Linux Benchmarks Would You Like To See Next?
  10. Open-Source, Linux Support For Corsair Link Devices Slowly Materializing
Latest Forum Discussions
  1. Linux hacker compares Solaris kernel code:
  2. Advertisements On Phoronix
  3. HOPE: The Ease Of Python With The Speed Of C++
  4. Updated and Optimized Ubuntu Free Graphics Drivers
  5. Users/Developers Threatening Fork Of Debian GNU/Linux
  6. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  7. AMD Releases UVD Video Decode Support For R600 GPUs
  8. Proof that strlcpy is un-needed