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Jesse Barnes 7010d50007 i915: switch back to fbcon on panic 
Normally when X is running, panic messages will be invisible and the machine
will just appear to hard hang.  This patch adds support for switching back to
the fbcon framebuffer on panic (through the use of a panic notifier
registration) so we can see what happened.

Note that in order to be really useful, X will have to run its VT in something
other than KD_GRAPHICS mode.  Also, not all kernel errors result in panics,
some go through BUG() which may trigger another type of event, not resulting in
a switch.
2008-06-18 13:57:39 -07:00
bsd-core [BSD] Move unlock in drm_vm.c from accidental platform #ifdeffing. 2008-05-27 15:12:35 -07:00
libdrm libdrm: shouldn't rely on this 2008-06-04 13:53:33 +10:00
linux-core i915: switch back to fbcon on panic 2008-06-18 13:57:39 -07:00
scripts drm: update kernel generator script using v4l script 2007-11-05 12:56:55 +10:00
shared-core [intel] remove settable use_mi_batchbuffer_start 2008-06-06 21:54:38 +01:00
tests drm: add functions to get/set gamma ramps 2008-06-02 14:04:41 +10:00
.gitignore Add a set of tests for DRM locking, exposing issues on BSD. 2007-08-15 13:41:24 -07:00
autogen.sh update autogen from xserver tree 2005-09-12 06:21:24 +00:00
configure.ac Add some trivial regression tests, one of which fails. 2007-07-19 04:59:59 -07:00
libdrm.pc.in Better pkgconfig-fu: -ldrm in Libs: 2005-10-13 21:03:31 +00:00
Makefile.am Add some trivial regression tests, one of which fails. 2007-07-19 04:59:59 -07:00
README More detailed instructions, tips. 2007-04-25 14:52:29 -06:00

README 

DRM README file


There are two main parts to this package: the DRM client library/interface
(libdrm.so) and kernel/hardware-specific device modules (such as i915.ko).



Compiling
---------

By default, libdrm and the DRM header files will install into /usr/local/.
If you want to install this DRM to replace your system copy, say:

	./configure --prefix=/usr --exec-prefix=/

Then,
	make install


To build the device-specific kernel modules:

	cd linux-core/
	make
	cp *.ko /lib/modules/VERSION/kernel/drivers/char/drm/
	   (where VERSION is your kernel version: uname -f)

Or,
	cd bsd-core/
	make
	copy the kernel modules to the appropriate place



Tips & Trouble-shooting
-----------------------

1. You'll need kernel sources.  If using Fedora Core 5, for example, you may
   need to install RPMs such as:

	kernel-smp-devel-2.6.15-1.2054_FC5.i686.rpm
	kernel-devel-2.6.15-1.2054_FC5.i686.rpm
	etc.


2. You may need to make a symlink from /lib/modules/VERSION/build to your
   kernel sources in /usr/src/kernels/VERSION (where version is `uname -r`):

	cd /lib/modules/VERSION
	ln -s /usr/src/kernels/VERSION build


3. If you've build the kernel modules but they won't load because of an
   error like this:

	$ /sbin/modprobe drm
	FATAL: Error inserting drm (/lib/modules/2.6.15-1.2054_FC5smp/kernel/drivers/char/drm/drm.ko): Invalid module format

   And 'dmesg|tail' says:

	drm: disagrees about version of symbol struct_module 

   Try recompiling your drm modules without the Module.symvers file.
   That is rm the /usr/src/kernels/2.6.15-1.2054_FC5-smp-i686/Module.symvers
   file (or rename it).  Then do a 'make clean' before rebuilding your drm
   modules.