I have a monitor that supports 2560x1080. While I have a Radeon 5450 graphic card, running Debian Jessie, I only can get 1920x1080. I installed firmware-linux-nonfree to get it running. Why isn't my complete resolution listed?Installing fglrx-driver using apt-getI have to mention that sudo apt-get install fglrx-driver gives me the following error:sudo apt-get install fglrx-driver [sudo] password for mostafa: Reading package lists... DoneBuilding dependency tree       Reading state information... DoneSome packages could not be installed. This may mean that you haverequested an impossible situation or if you are using the unstabledistribution that some required packages have not yet been createdor been moved out of Incoming.The following information may help to resolve the situation:The following packages have unmet dependencies: fglrx-driver : Depends: xorg-video-abi-19 but it is not installable or                         xorg-video-abi-18 or                         xorg-video-abi-15 but it is not installable or                         xorg-video-abi-14 but it is not installable or                         xorg-video-abi-13 but it is not installable or                         xorg-video-abi-12 but it is not installable or                         xorg-video-abi-11 but it is not installable or                         xorg-video-abi-10 but it is not installable or                         xorg-video-abi-8 but it is not installable or                         xorg-video-abi-6.0 but it is not installable                Recommends: fglrx-modules-dkms (= 1:15.9-4~deb8u2) but it is not going to be installed or                            fglrx-kernel-15.9                Recommends: libgl1-fglrx-glx (= 1:15.9-4~deb8u2) but it is not going to be installed                Recommends: libgl1-fglrx-glx-i386 but it is not installable                Recommends: fglrx-atieventsd but it is not going to be installedE: Unable to correct problems, you have held broken packages.Insalling proprietary driver from AMD websiteAnd installing proprietary driver from AMD website ends with the following error:Supported adapter detected.Check if system has the tools required for installation.Uninstalling any previously installed drivers.Unloading radeon module...rmmod: ERROR: Module radeon is in useUnloading drm module...rmmod: ERROR: Module drm is in use by: ttm drm_kms_helper radeon[Message] Kernel Module : Trying to install a precompiled kernel module.[Message] Kernel Module : Precompiled kernel module version mismatched.[Message] Kernel Module : Found kernel module build environment, generating kernel module now.AMD kernel module generator version 2.1doing Makefile based build for kernel 2.6.x and higherrm -rf *.c *.h *.o *.ko *.a .??* *.symversmake -C /lib/modules/4.5.0-2-amd64/build SUBDIRS=/lib/modules/fglrx/build_mod/2.6.x modulesmake[1]: Entering directory '/usr/src/linux-headers-4.5.0-2-amd64'  CC [M]  /lib/modules/fglrx/build_mod/2.6.x/firegl_public.o/lib/modules/fglrx/build_mod/2.6.x/firegl_public.c: In function firegl_major_proc_read:/lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:634:9: error: void value not ignored as it ought to be     len = seq_printf(m, %d\n, major);         ^/lib/modules/fglrx/build_mod/2.6.x/firegl_public.c: In function KCL_fpu_save_init:/lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:6458:49: error: XSTATE_FP undeclared (first use in this function)       if (!(fpu->state.xsave.header.xfeatures & XSTATE_FP))                                                 ^/lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:6458:49: note: each undeclared identifier is reported only once for each function it appears in/lib/modules/fglrx/build_mod/2.6.x/firegl_public.c: At top level:/lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:6448:12: warning: KCL_fpu_save_init defined but not used [-Wunused-function] static int KCL_fpu_save_init(struct task_struct *tsk)            ^/usr/src/linux-headers-4.5.0-2-common/scripts/Makefile.build:263: recipe for target '/lib/modules/fglrx/build_mod/2.6.x/firegl_public.o' failedmake[4]: *** [/lib/modules/fglrx/build_mod/2.6.x/firegl_public.o] Error 1/usr/src/linux-headers-4.5.0-2-common/Makefile:1408: recipe for target '_module_/lib/modules/fglrx/build_mod/2.6.x' failedmake[3]: *** [_module_/lib/modules/fglrx/build_mod/2.6.x] Error 2Makefile:146: recipe for target 'sub-make' failedmake[2]: *** [sub-make] Error 2Makefile:8: recipe for target 'all' failedmake[1]: *** [all] Error 2make[1]: Leaving directory '/usr/src/linux-headers-4.5.0-2-amd64'Makefile:88: recipe for target 'kmod_build' failedmake: *** [kmod_build] Error 2build failed with return value 2[Error] Kernel Module : Failed to compile kernel module - please consult readme.[Reboot] Kernel Module : update-initramfs
How can I install the proper GPU driver for radeon 5450 on Debian Jessie?
debian;drivers;graphics;amd graphics