R9 290 vs 290x pricing and reference design questions

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I was talking about rebuilding the module not reinstalling the package

Hmmm well I keep trying it but I always get this:

Building initial module for 4.4.0-47-generic
Error! Bad return status for module build on kernel: 4.4.0-47-generic (x86_64)
Consult /var/lib/dkms/fglrx-core/15.201/build/make.log for more information.


Which looks like it fails for some other reason. Note this time I simply did an 'apt-get install fglrx'

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DKMS make.log for fglrx-core-15.201 for kernel 4.4.0-47-generic (x86_64)
Sun Nov 27 19:02:26 EST 2016
/usr/sbin/dkms: line 73: cd: /var/lib/dkms/fglrx/15.201/build: No such file or directory
AMD kernel module generator version 2.1
doing Makefile based build for kernel 2.6.x and higher
rm -rf *.c *.h *.o *.ko *.a .??* *.symvers
make -C /lib/modules/4.4.0-47-generic/build SUBDIRS=/var/lib/dkms/fglrx-core/15.201/build/2.6.x modules
make[1]: Entering directory `/usr/src/linux-headers-4.4.0-47-generic'
  CC [M]  /var/lib/dkms/fglrx-core/15.201/build/2.6.x/firegl_public.o
/var/lib/dkms/fglrx-core/15.201/build/2.6.x/firegl_public.c: In function ‘firegl_major_proc_read’:
/var/lib/dkms/fglrx-core/15.201/build/2.6.x/firegl_public.c:639:9: error: void value not ignored as it ought to be
     len = seq_printf(m, "%d\n", major);
         ^
/var/lib/dkms/fglrx-core/15.201/build/2.6.x/firegl_public.c: In function ‘KCL_fpu_save_init’:
/var/lib/dkms/fglrx-core/15.201/build/2.6.x/firegl_public.c:6508:49: error: ‘XSTATE_FP’ undeclared (first use in this function)
       if (!(fpu->state.xsave.header.xfeatures & XSTATE_FP))
                                                 ^
/var/lib/dkms/fglrx-core/15.201/build/2.6.x/firegl_public.c:6508:49: note: each undeclared identifier is reported only once for each function it appears in
/var/lib/dkms/fglrx-core/15.201/build/2.6.x/firegl_public.c: At top level:
/var/lib/dkms/fglrx-core/15.201/build/2.6.x/firegl_public.c:6498:12: warning: ‘KCL_fpu_save_init’ defined but not used [-Wunused-function]
 static int KCL_fpu_save_init(struct task_struct *tsk)
            ^
make[2]: *** [/var/lib/dkms/fglrx-core/15.201/build/2.6.x/firegl_public.o] Error 1
make[1]: *** [_module_/var/lib/dkms/fglrx-core/15.201/build/2.6.x] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-4.4.0-47-generic'
make: *** [kmod_build] Error 2
build failed with return value 2