On some platforms, the firmware may read & write GPU registers on lid close, suspend/resume time or during various SMM events. If one of the graphics pipes is disabled at that time, the GPU may hang due to the programming dependencies of the various registers. This patch adds a quirk to force the driver to keep pipe A enabled if necessary, through user configuration in xorg.conf or via a platform specific quirk. Leaving the pipe enabled comes at a power cost however, so the quirk should only be enabled when strictly necessary. Fixes https://bugs.freedesktop.org/show_bug.cgi?id=11432. |
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| Makefile.am | ||
| intel.man | ||