I recently compiled the drm and nouveau modules on Debian unstable. All went well until I had to insert the drm module, I recieved to following error: insmod: error inserting 'drm.ko': -1 Unknown symbol in module I have compiled the modules before and I have always gotten this same error. Here is the log of my build: debian:/home/michael/drm# ./autogen.sh --prefix=/usr && make && make install autoreconf: Entering directory `.' autoreconf: <a href="http://configure.ac">configure.ac</a>: not using Gettext autoreconf: running: aclocal autoreconf: <a href="http://configure.ac">configure.ac</a>: tracing autoreconf: running: libtoolize --copy autoreconf: running: /usr/bin/autoconf autoreconf: running: /usr/bin/autoheader autoreconf: running: automake --add-missing --copy --no-force <a href="http://configure.ac:24"> configure.ac:24</a>: installing `./missing' <a href="http://configure.ac:24">configure.ac:24</a>: installing `./install-sh' libdrm/Makefile.am: installing `./depcomp' autoreconf: Leaving directory `.' checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... no checking for mawk... mawk checking whether make sets $(MAKE)... yes checking build system type... i586-pc-linux-gnu checking host system type... i586-pc-linux-gnu checking for style of include used by make... GNU checking for gcc... gcc checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking dependency style of gcc... gcc3 checking for a sed that does not truncate output... /bin/sed checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for ld used by gcc... /usr/bin/ld checking if the linker (/usr/bin/ld) is GNU ld... yes checking for /usr/bin/ld option to reload object files... -r checking for BSD-compatible nm... /usr/bin/nm -B checking whether ln -s works... yes checking how to recognize dependent libraries... pass_all checking how to run the C preprocessor... gcc -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h.. . yes checking for stdint.h... yes checking for unistd.h... yes checking dlfcn.h usability... yes checking dlfcn.h presence... yes checking for dlfcn.h... yes checking for g++... g++ checking whether we are using the GNU C++ compiler... yes checking whether g++ accepts -g... yes checking dependency style of g++... gcc3 checking how to run the C++ preprocessor... g++ -E checking for g77... no checking for xlf... no checking for f77... no checking for frt... no checking for pgf77... no checking for cf77... no checking for fort77... no checking for fl32... no checking for af77... no checking for xlf90... no checking for f90... no checking for pgf90... no checking for pghpf... no checking for epcf90... no checking for gfortran... no checking for g95... no checking for xlf95... no checking for f95... no checking for fort... no checking for ifort... no checking for ifc... no checking for efc... no checking for pgf95... no checking for lf95... no checking for ftn... no checking whether we are using the GNU Fortran 77 compiler... no checking whether  accepts -g... no checking the maximum length of command line arguments... 98304 checking command to parse /usr/bin/nm -B output from gcc object... ok checking for objdir... .libs checking for ar... ar checking for ranlib... ranlib checking for strip... strip checking if gcc supports -fno-rtti -fno-exceptions... no checking for gcc option to produce PIC... -fPIC checking if gcc PIC flag -fPIC works... yes checking if gcc static flag -static works... yes checking if gcc supports -c -o file.o... yes checking whether the gcc linker (/usr/bin/ld) supports shared libraries... yes checking whether -lc should be explicitly linked in... no checking dynamic linker characteristics... GNU/Linux ld.so checking how to hardcode library paths into programs... immediate checking whether stripping libraries is possible... yes checking if libtool supports shared libraries... yes checking whether to build shared libraries... yes checking whether to build static libraries... no configure: creating libtool appending configuration tag "CXX" to libtool checking for ld used by g++... /usr/bin/ld checking if the linker (/usr/bin/ld) is GNU ld... yes checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes checking for g++ option to produce PIC... -fPIC checking if g++ PIC flag -fPIC works... yes checking if g++ static flag -static works... yes checking if g++ supports -c -o file.o... yes checking whether the g++ linker (/usr/bin/ld) supports shared libraries... yes checking dynamic linker characteristics... GNU/Linux ld.so checking how to hardcode library paths into programs... immediate appending configuration tag "F77" to libtool checking for gcc... (cached) gcc checking whether we are using the GNU C compiler... (cached) yes checking whether gcc accepts -g... (cached) yes checking for gcc option to accept ISO C89... (cached) none needed checking dependency style of gcc... (cached) gcc3 checking for ANSI C header files... (cached) yes checking for special C compiler options needed for large files... no checking for _FILE_OFFSET_BITS value needed for large files... 64 configure: creating ./config.status config.status: creating Makefile config.status: creating libdrm/Makefile config.status: creating shared-core/Makefile config.status: creating tests/Makefile config.status : creating libdrm.pc config.status: creating libdrm/config.h config.status: executing depfiles commands Making all in libdrm make[1]: Entering directory `/home/michael/drm/libdrm' make  all-am make[2]: Entering directory `/home/michael/drm/libdrm' /bin/sh ../libtool --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I.    -I../shared-core -g -O2 -MT xf86drm.lo -MD -MP -MF .deps/xf86drm.Tpo -c -o xf86drm.lo xf86drm.c mkdir .libs  gcc -DHAVE_CONFIG_H -I. -I../shared-core -g -O2 -MT xf86drm.lo -MD -MP -MF .deps/xf86drm.Tpo -c xf86drm.c  -fPIC -DPIC -o .libs/xf86drm.o mv -f .deps/xf86drm.Tpo .deps/xf86drm.Plo /bin/sh ../libtool --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I.    -I../shared-core -g -O2 -MT xf86drmHash.lo -MD -MP -MF .deps/xf86drmHash.Tpo -c -o xf86drmHash.lo xf86drmHash.c  gcc -DHAVE_CONFIG_H -I. -I../shared-core -g -O2 -MT xf86drmHash.lo -MD -MP -MF .deps/xf86drmHash.Tpo -c xf86drmHash.c  -fPIC -DPIC -o .libs/xf86drmHash.o mv -f .deps/xf86drmHash.Tpo .deps/xf86drmHash.Plo /bin/sh ../libtool --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I.    -I../shared-core -g -O2 -MT xf86drmRandom.lo -MD -MP -MF .deps/xf86drmRandom.Tpo -c -o xf86drmRandom.lo xf86drmRandom.c  gcc -DHAVE_CONFIG_H -I. -I../shared-core -g -O2 -MT xf86drmRandom.lo -MD -MP -MF .deps/xf86drmRandom.Tpo -c xf86drmRandom.c  -fPIC -DPIC -o .libs/xf86drmRandom.o mv -f .deps/xf86drmRandom.Tpo .deps/xf86drmRandom.Plo /bin/sh ../libtool --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I.    -I../shared-core -g -O2 -MT xf86drmSL.lo -MD -MP -MF .deps/xf86drmSL.Tpo -c -o xf86drmSL.lo xf86drmSL.c  gcc -DHAVE_CONFIG_H -I. -I../shared-core -g -O2 -MT xf86drmSL.lo -MD -MP -MF .deps/xf86drmSL.Tpo -c xf86drmSL.c  -fPIC -DPIC -o .libs/xf86drmSL.o mv -f .deps/xf86drmSL.Tpo .deps/xf86drmSL.Plo /bin/sh ../libtool --tag=CC   --mode=link gcc -I../shared-core -g -O2 -version-number 2:3:0 -no-undefined  -o <a href="http://libdrm.la">libdrm.la</a> -rpath /usr/lib xf86drm.lo xf86drmHash.lo xf86drmRandom.lo xf86drmSL.lo  gcc -shared  .libs/xf86drm.o .libs/xf86drmHash.o .libs/xf86drmRandom.o .libs/xf86drmSL.o   -Wl,-soname -Wl, libdrm.so.2 -o .libs/libdrm.so.2.3.0 (cd .libs && rm -f libdrm.so.2 && ln -s libdrm.so.2.3.0 libdrm.so.2) (cd .libs && rm -f libdrm.so && ln -s libdrm.so.2.3.0 libdrm.so) creating <a href="http://libdrm.la">libdrm.la</a> (cd .libs && rm -f <a href="http://libdrm.la">libdrm.la</a> && ln -s ../libdrm.la <a href="http://libdrm.la">libdrm.la</a>) make[2]: Leaving directory `/home/michael/drm/libdrm' make[1]: Leaving directory `/home/michael/drm/libdrm' Making all in shared-core make[1]: Entering directory `/home/michael/drm/shared-core' make[1]: Nothing to be done for `all'. make[1]: Leaving directory `/home/michael/drm/shared-core' Making all in tests make[1]: Entering directory `/home/michael/drm/tests' gcc -DHAVE_CONFIG_H -I. -I../libdrm    -I ../shared-core -g -O2 -MT dristat.o -MD -MP -MF .deps/dristat.Tpo -c -o dristat.o dristat.c mv -f .deps/dristat.Tpo .deps/dristat.Po /bin/sh ../libtool --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I../libdrm    -I ../shared-core -g -O2 -MT drmtest.lo -MD -MP -MF .deps/drmtest.Tpo -c -o drmtest.lo drmtest.c mkdir .libs  gcc -DHAVE_CONFIG_H -I. -I../libdrm -I ../shared-core -g -O2 -MT drmtest.lo -MD -MP -MF .deps/drmtest.Tpo -c drmtest.c  -fPIC -DPIC -o .libs/drmtest.o mv -f .deps/drmtest.Tpo .deps/drmtest.Plo /bin/sh ../libtool --tag=CC   --mode=link gcc -I ../shared-core -g -O2   -o <a href="http://libdrmtest.la">libdrmtest.la</a>  drmtest.lo ../libdrm/libdrm.la ar cru .libs/libdrmtest.a .libs/drmtest.o ranlib .libs/libdrmtest.a creating <a href="http://libdrmtest.la">libdrmtest.la</a> (cd .libs && rm -f <a href="http://libdrmtest.la">libdrmtest.la</a> && ln -s ../libdrmtest.la <a href="http://libdrmtest.la">libdrmtest.la</a>) /bin/sh ../libtool --tag=CC   --mode=link gcc -I ../shared-core -g -O2   -o dristat dristat.o <a href="http://libdrmtest.la">libdrmtest.la</a> gcc -I ../shared-core -g -O2 -o .libs/dristat dristat.o  ./.libs/libdrmtest.a /home/michael/drm/libdrm/.libs/libdrm.so creating dristat gcc -DHAVE_CONFIG_H -I. -I../libdrm    -I ../shared-core -g -O2 -MT drmstat.o -MD -MP -MF .deps/drmstat.Tpo -c -o drmstat.o drmstat.c mv -f .deps/drmstat.Tpo .deps/drmstat.Po /bin/sh ../libtool --tag=CC   --mode=link gcc -I ../shared-core -g -O2   -o drmstat drmstat.o <a href="http://libdrmtest.la"> libdrmtest.la</a> gcc -I ../shared-core -g -O2 -o .libs/drmstat drmstat.o  ./.libs/libdrmtest.a /home/michael/drm/libdrm/.libs/libdrm.so creating drmstat make[1]: Leaving directory `/home/michael/drm/tests' make[1]: Entering directory `/home/michael/drm' make[1]: Nothing to be done for `all-am'. make[1]: Leaving directory `/home/michael/drm' Making install in libdrm make[1]: Entering directory `/home/michael/drm/libdrm' make[2]: Entering directory `/home/michael/drm/libdrm' make[2]: Nothing to be done for `install-exec-am'. test -z "/usr/lib" || /bin/mkdir -p "/usr/lib"  /bin/sh ../libtool --mode=install /usr/bin/install -c  ' <a href="http://libdrm.la">libdrm.la</a>' '/usr/lib/libdrm.la' /usr/bin/install -c .libs/libdrm.so.2.3.0 /usr/lib/libdrm.so.2.3.0 (cd /usr/lib && { ln -s -f libdrm.so.2.3.0 libdrm.so.2 || { rm -f libdrm.so.2 && ln -s libdrm.so.2.3.0 libdrm.so.2; }; }) (cd /usr/lib && { ln -s -f libdrm.so.2.3.0 libdrm.so || { rm -f libdrm.so && ln -s libdrm.so.2.3.0 libdrm.so; }; }) /usr/bin/install -c .libs/libdrm.lai /usr/lib/libdrm.la PATH="$PATH:/sbin" ldconfig -n /usr/lib ---------------------------------------------------------------------- Libraries have been installed in:    /usr/lib If you ever happen to want to link against installed libraries in a given directory, LIBDIR, you must either use libtool, and specify the full pathname of the library, or use the `-LLIBDIR' flag during linking and do at least one of the following:    - add LIBDIR to the `LD_LIBRARY_PATH' environment variable      during execution    - add LIBDIR to the `LD_RUN_PATH' environment variable      during linking    - use the `-Wl,--rpath -Wl,LIBDIR' linker flag    - have your system administrator add LIBDIR to `/etc/ld.so.conf' See any operating system documentation about shared libraries for more information, such as the ld(1) and ld.so(8) manual pages. ---------------------------------------------------------------------- test -z "/usr/include" || /bin/mkdir -p "/usr/include"  /usr/bin/install -c -m 644 'xf86drm.h' '/usr/include/xf86drm.h'  /usr/bin/install -c -m 644 'xf86mm.h' '/usr/include/xf86mm.h' make[2]: Leaving directory `/home/michael/drm/libdrm' make[1]: Leaving directory `/home/michael/drm/libdrm' Making install in shared-core make[1]: Entering directory `/home/michael/drm/shared-core' make[2]: Entering directory `/home/michael/drm/shared-core' make[2]: Nothing to be done for `install-exec-am'. test -z "/usr/include/drm" || /bin/mkdir -p "/usr/include/drm"  /usr/bin/install -c -m 644 'drm.h' '/usr/include/drm/drm.h'  /usr/bin/install -c -m 644 'drm_sarea.h' '/usr/include/drm/drm_sarea.h'  /usr/bin/install -c -m 644 'i915_drm.h' '/usr/include/drm/i915_drm.h'  /usr/bin/install -c -m 644 'mach64_drm.h' '/usr/include/drm/mach64_drm.h'  /usr/bin/install -c -m 644 'mga_drm.h' '/usr/include/drm/mga_drm.h'  /usr/bin/install -c -m 644 'nouveau_drm.h' '/usr/include/drm/nouveau_drm.h'  /usr/bin/install -c -m 644 'r128_drm.h' '/usr/include/drm/r128_drm.h'  /usr/bin/install -c -m 644 'radeon_drm.h' '/usr/include/drm/radeon_drm.h'  /usr/bin/install -c -m 644 'savage_drm.h' '/usr/include/drm/savage_drm.h'  /usr/bin/install -c -m 644 'sis_drm.h' '/usr/include/drm/sis_drm.h'  /usr/bin/install -c -m 644 'via_drm.h' '/usr/include/drm/via_drm.h'  /usr/bin/install -c -m 644 'r300_reg.h' '/usr/include/drm/r300_reg.h'  /usr/bin/install -c -m 644 'via_3d_reg.h' '/usr/include/drm/via_3d_reg.h' make[2]: Leaving directory `/home/michael/drm/shared-core' make[1]: Leaving directory `/home/michael/drm/shared-core' Making install in tests make[1]: Entering directory `/home/michael/drm/tests' make[2]: Entering directory `/home/michael/drm/tests' make[2]: Nothing to be done for `install-exec-am'. make[2]: Nothing to be done for `install-data-am'. make[2]: Leaving directory `/home/michael/drm/tests' make[1]: Leaving directory `/home/michael/drm/tests' make[1]: Entering directory `/home/michael/drm' make[2]: Entering directory `/home/michael/drm' make[2]: Nothing to be done for `install-exec-am'. test -z "/usr/lib/pkgconfig" || /bin/mkdir -p "/usr/lib/pkgconfig"  /usr/bin/install -c -m 644 'libdrm.pc' '/usr/lib/pkgconfig/libdrm.pc' make[2]: Leaving directory `/home/michael/drm' make[1]: Leaving directory `/home/michael/drm' debian:/home/michael/drm# cd linux-core && make nouveau.o make DRM_MODULES=nouveau.o modules make[1]: Entering directory `/home/michael/drm/linux-core' sh ../scripts/create_linux_pci_lists.sh < ../shared-core/drm_pciids.txt make -C /lib/modules/2.6.22-1-486/build  SUBDIRS=`pwd` DRMSRCDIR=`pwd` modules make[2]: Entering directory `/usr/src/linux-headers-2.6.22-1-486 '   CC [M]  /home/michael/drm/linux-core/drm_auth.o   CC [M]  /home/michael/drm/linux-core/drm_bufs.o   CC [M]  /home/michael/drm/linux-core/drm_context.o   CC [M]  /home/michael/drm/linux-core/drm_dma.o   CC [M]  /home/michael/drm/linux-core/drm_drawable.o   CC [M]  /home/michael/drm/linux-core/drm_drv.o   CC [M]  /home/michael/drm/linux-core/drm_fops.o   CC [M]  /home/michael/drm/linux-core/drm_ioctl.o   CC [M]  /home/michael/drm/linux-core/drm_irq.o   CC [M]  /home/michael/drm/linux-core/drm_lock.o   CC [M]  /home/michael/drm/linux-core/drm_memory.o   CC [M]  /home/michael/drm/linux-core/drm_proc.o   CC [M]  /home/michael/drm/linux-core/drm_stub.o   CC [M]  /home/michael/drm/linux-core/drm_vm.o   CC [M]  /home/michael/drm/linux-core/drm_sysfs.o   CC [M]  /home/michael/drm/linux-core/drm_pci.o   CC [M]  /home/michael/drm/linux-core/drm_agpsupport.o   CC [M]  /home/michael/drm/linux-core/drm_scatter.o   CC [M]  /home/michael/drm/linux-core/drm_memory_debug.o   CC [M]  /home/michael/drm/linux-core/ati_pcigart.o   CC [M]  /home/michael/drm/linux-core/drm_sman.o   CC [M]  /home/michael/drm/linux-core/drm_hashtab.o   CC [M]  /home/michael/drm/linux-core/drm_mm.o   CC [M]  /home/michael/drm/linux-core/drm_object.o   CC [M]  /home/michael/drm/linux-core/drm_compat.o   CC [M]  /home/michael/drm/linux-core/drm_fence.o   CC [M]  /home/michael/drm/linux-core/drm_ttm.o   CC [M]  /home/michael/drm/linux-core/drm_bo.o   CC [M]  /home/michael/drm/linux-core/drm_bo_move.o   CC [M]  /home/michael/drm/linux-core/nouveau_drv.o   CC [M]  /home/michael/drm/linux-core/nouveau_state.o /home/michael/drm/linux-core/nouveau_state.c: In function 'nouveau_ioctl_getparam': /home/michael/drm/linux-core/nouveau_state.c:458: warning: cast from pointer to integer of different size /home/michael/drm/linux-core/nouveau_state.c: In function 'nouveau_wait_for_idle': /home/michael/drm/linux-core/nouveau_state.c:528: warning: unused variable 'pmc_e'   CC [M]  /home/michael/drm/linux-core/nouveau_fifo.o   CC [M]  /home/michael/drm/linux-core/nouveau_mem.o   CC [M]  /home/michael/drm/linux-core/nouveau_object.o   CC [M]  /home/michael/drm/linux-core/nouveau_irq.o   CC [M]  /home/michael/drm/linux-core/nouveau_notifier.o   CC [M]  /home/michael/drm/linux-core/nouveau_sgdma.o   CC [M]  /home/michael/drm/linux-core/nv04_timer.o   CC [M]  /home/michael/drm/linux-core/nv04_mc.o   CC [M]  /home/michael/drm/linux-core/nv40_mc.o   CC [M]  /home/michael/drm/linux-core/nv50_mc.o   CC [M]  /home/michael/drm/linux-core/nv04_fb.o   CC [M]  /home/michael/drm/linux-core/nv10_fb.o   CC [M]  /home/michael/drm/linux-core/nv40_fb.o   CC [M]  /home/michael/drm/linux-core/nv04_fifo.o   CC [M]  /home/michael/drm/linux-core/nv10_fifo.o   CC [M]  /home/michael/drm/linux-core/nv40_fifo.o   CC [M]  /home/michael/drm/linux-core/nv50_fifo.o   CC [M]  /home/michael/drm/linux-core/nv04_graph.o   CC [M]  /home/michael/drm/linux-core/nv10_graph.o   CC [M]  /home/michael/drm/linux-core/nv20_graph.o   CC [M]  /home/michael/drm/linux-core/nv30_graph.o   CC [M]  /home/michael/drm/linux-core/nv40_graph.o   CC [M]  /home/michael/drm/linux-core/nv50_graph.o   CC [M]  /home/michael/drm/linux-core/nv04_instmem.o   CC [M]  /home/michael/drm/linux-core/nv50_instmem.o   LD [M]  /home/michael/drm/linux-core/drm.o   LD [M]  /home/michael/drm/linux-core/nouveau.o   Building modules, stage 2.   MODPOST 2 modules   CC      /home/michael/drm/linux-core/drm.mod.o   LD [M]  /home/michael/drm/linux-core/drm.ko   CC      /home/michael/drm/linux-core/nouveau.mod.o   LD [M]  /home/michael/drm/linux-core/nouveau.ko make[2]: Leaving directory `/usr/src/linux-headers-2.6.22-1-486' make[1]: Leaving directory `/home/michael/drm/linux-core' debian:/home/michael/drm/linux-core# insmod drm.ko insmod: error inserting 'drm.ko': -1 Unknown symbol in module I use the latest available packages from Debian and I have a Nvidia TNT2 64  video card.