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Version 3.2.1 - 26 April 2013
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- [hotfix] Fixed Bumblebee 3.2 not working on a lot of setups.
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This happened because of "Device" section splitting in xorg conf files.
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- [fix] Fixed an issue where an empty XorgModulePath lead to -isolateDecide
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being removed from Xorg start command line instead of -modulepath.
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Important notes for packagers:
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- In 3.2.1 release, we removed the bumblebee/xorg.conf.d/busid.conf file,
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because it was avoiding X to start in cases widely common. If your packaging
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system does not automatically remove it on upgrade to 3.2.1, then you will
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still have a broken optirun. You either need to remove this file on package
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upgrade or tell your distro users to do so, depending on your distro policy.
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- In 3.2 release, we have extended our nvidia-specific udev rule file to add
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device files (/dev/nvidia*) when the module is loaded (previously it would
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only remove those files when the module is unloaded). Consequently, we also
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changed its name. Some distributions, for example Gentoo, do not need to
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install this rule file because they already have a similar mechanism in
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place. Please also note that the rule file sets file permissions to 0666; you
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may want to adjust it to set permissions/owner/group more strictly according
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to your distribution's practice before installing. If you already use the
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kernel module options to declare permissions, simply running nvidia-smi on
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module load will do the job.
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- bbswitch is independent of the driver; vga_switcheroo works for nouveau only.
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See also the Known Issues section above and
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https://github.com/Bumblebee-Project/Bumblebee/wiki/Comparison-of-PM-methods
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- the video drivers must be unloadable. This means that it should not be
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compiled into the kernel. When using dynamically built modules like nvidia,
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be sure that the toolchain used for building the kernel matches the one that
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is used for building the module. This means that Ubuntu mainline kernels do
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not work and will cause crashes.
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- VirtualGL performance is very dependent on the Transport method set. The
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default "proxy" setting appears to perform bad in some situations. Try other
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available settings like "rgb" or "yuv".
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- in many cases, primus offers better performance; please try it and report
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compatibility issues in primus tracker, if you find any; for now VirtualGL is
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still preferred as the default autodetected render bridge, while primus is
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being tested at larger scales before being released as default. Try it and
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ensure everything you use works to help us build the best backend.
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- vga-switcheroo won't survive suspension/hibernation (patch for newer Optimus
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machines for OFF to work has been published in Kernel 3.3; a good patch for
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suspend is still being prepared).
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- bbswitch cannot disable the discrete nvidia card for the Dell Vostro 360
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desktop with Synergy. If you have a machine using that technology, please
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submit your machine information on: https://bugs.launchpad.net/bugs/752542
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- Some laptops (mainly Lenovo) are neither supported by bbswitch nor the video
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drivers. See https://github.com/Bumblebee-Project/bbswitch/issues/2. This is
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fixed in Linux Kernel 3.9.
added
removed
doc/RELEASE_NOTES_3_2_1
