in case it's useful grep -i amd /var/log/Xorg.0.log | grep -v Modeline [ 324.709] (II) Applying OutputClass "AMDgpu" to /dev/dri/card0 [ 324.709] loading driver: amdgpu [ 324.818] (==) Matched amdgpu as autoconfigured driver 0 [ 324.818] (II) LoadModule: "amdgpu" [ 324.825] (II) Loading /usr/lib64/xorg/modules/drivers/amdgpu_drv.so [ 324.877] (II) Module amdgpu: vendor="X.Org Foundation" [ 324.992] (II) AMDGPU: Driver for AMD Radeon: All GPUs supported by the amdgpu kernel driver [ 325.108] (II) Loading sub module "ramdac" [ 325.108] (II) LoadModule: "ramdac" [ 325.108] (II) Module "ramdac" already built-in [ 325.110] (II) AMDGPU(0): Creating default Display subsection in Screen section [ 325.110] (==) AMDGPU(0): Depth 24, (--) framebuffer bpp 32 [ 325.110] (II) AMDGPU(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps) [ 325.110] (==) AMDGPU(0): Default visual is TrueColor [ 325.110] (==) AMDGPU(0): RGB weight 888 [ 325.110] (II) AMDGPU(0): Using 8 bits per RGB (8 bit DAC) [ 325.110] (--) AMDGPU(0): Chipset: "Unknown AMD Radeon GPU" (ChipID = 0x1638) [ 327.957] (II) AMDGPU(0): glamor X acceleration enabled on AMD RENOIR (DRM 3.42.0, 5.14.14-200.fc34.x86_64, LLVM 12.0.1) [ 327.957] (II) AMDGPU(0): glamor detected, initialising EGL layer. [ 327.957] (==) AMDGPU(0): TearFree property default: auto [ 327.957] (==) AMDGPU(0): VariableRefresh: disabled [ 327.957] (II) AMDGPU(0): KMS Pageflipping: enabled [ 327.957] (II) AMDGPU(0): Output HDMI-A-0 has no monitor section [ 327.958] (II) AMDGPU(0): Output HDMI-A-1 has no monitor section [ 327.958] (II) AMDGPU(0): Output DisplayPort-0 has no monitor section [ 327.963] (II) AMDGPU(0): EDID for output HDMI-A-0 [ 327.963] (II) AMDGPU(0): EDID for output HDMI-A-1 [ 327.963] (II) AMDGPU(0): Manufacturer: VSC Model: cc32 Serial#: 16843025 [ 327.963] (II) AMDGPU(0): Year: 2018 Week: 47 [ 327.963] (II) AMDGPU(0): EDID Version: 1.3 [ 327.963] (II) AMDGPU(0): Digital Display Input [ 327.963] (II) AMDGPU(0): Max Image Size [cm]: horiz.: 60 vert.: 34 [ 327.963] (II) AMDGPU(0): Gamma: 2.20 [ 327.963] (II) AMDGPU(0): DPMS capabilities: Off [ 327.963] (II) AMDGPU(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 [ 327.963] (II) AMDGPU(0): Default color space is primary color space [ 327.963] (II) AMDGPU(0): First detailed timing is preferred mode [ 327.963] (II) AMDGPU(0): redX: 0.661 redY: 0.332 greenX: 0.304 greenY: 0.613 [ 327.963] (II) AMDGPU(0): blueX: 0.149 blueY: 0.060 whiteX: 0.313 whiteY: 0.329 [ 327.963] (II) AMDGPU(0): Supported established timings: [ 327.963] (II) AMDGPU(0): 720x400@70Hz [ 327.963] (II) AMDGPU(0): 640x480@60Hz [ 327.963] (II) AMDGPU(0): 640x480@67Hz [ 327.963] (II) AMDGPU(0): 640x480@72Hz [ 327.963] (II) AMDGPU(0): 640x480@75Hz [ 327.963] (II) AMDGPU(0): 800x600@56Hz [ 327.963] (II) AMDGPU(0): 800x600@60Hz [ 327.963] (II) AMDGPU(0): 800x600@72Hz [ 327.963] (II) AMDGPU(0): 800x600@75Hz [ 327.964] (II) AMDGPU(0): 832x624@75Hz [ 327.964] (II) AMDGPU(0): 1024x768@60Hz [ 327.964] (II) AMDGPU(0): 1024x768@70Hz [ 327.964] (II) AMDGPU(0): 1024x768@75Hz [ 327.964] (II) AMDGPU(0): 1280x1024@75Hz [ 327.964] (II) AMDGPU(0): 1152x864@75Hz [ 327.964] (II) AMDGPU(0): Manufacturer's mask: 0 [ 327.964] (II) AMDGPU(0): Supported standard timings: [ 327.964] (II) AMDGPU(0): #0: hsize: 2048 vsize 1152 refresh: 60 vid: 49377 [ 327.964] (II) AMDGPU(0): #1: hsize: 1920 vsize 1200 refresh: 60 vid: 209 [ 327.964] (II) AMDGPU(0): #2: hsize: 1920 vsize 1080 refresh: 60 vid: 49361 [ 327.964] (II) AMDGPU(0): #3: hsize: 1680 vsize 1050 refresh: 60 vid: 179 [ 327.964] (II) AMDGPU(0): #4: hsize: 1600 vsize 900 refresh: 60 vid: 49321 [ 327.964] (II) AMDGPU(0): #5: hsize: 1280 vsize 1024 refresh: 60 vid: 32897 [ 327.964] (II) AMDGPU(0): #6: hsize: 1280 vsize 800 refresh: 60 vid: 129 [ 327.964] (II) AMDGPU(0): #7: hsize: 1280 vsize 720 refresh: 60 vid: 49281 [ 327.964] (II) AMDGPU(0): Supported detailed timing: [ 327.964] (II) AMDGPU(0): clock: 241.5 MHz Image Size: 597 x 336 mm [ 327.964] (II) AMDGPU(0): h_active: 2560 h_sync: 2608 h_sync_end 2640 h_blank_end 2720 h_border: 0 [ 327.964] (II) AMDGPU(0): v_active: 1440 v_sync: 1443 v_sync_end 1448 v_blanking: 1481 v_border: 0 [ 327.964] (II) AMDGPU(0): Serial No: UP2184700251 [ 327.964] (II) AMDGPU(0): Ranges: V min: 24 V max: 120 Hz, H min: 15 H max: 130 kHz, PixClock max 305 MHz [ 327.964] (II) AMDGPU(0): Monitor name: VP2771 [ 327.964] (II) AMDGPU(0): Supported detailed timing: [ 327.964] (II) AMDGPU(0): clock: 148.5 MHz Image Size: 597 x 336 mm [ 327.964] (II) AMDGPU(0): h_active: 1920 h_sync: 2008 h_sync_end 2052 h_blank_end 2200 h_border: 0 [ 327.964] (II) AMDGPU(0): v_active: 1080 v_sync: 1084 v_sync_end 1089 v_blanking: 1125 v_border: 0 [ 327.964] (II) AMDGPU(0): Supported detailed timing: [ 327.964] (II) AMDGPU(0): clock: 74.2 MHz Image Size: 597 x 336 mm [ 327.964] (II) AMDGPU(0): h_active: 1920 h_sync: 2008 h_sync_end 2052 h_blank_end 2200 h_border: 0 [ 327.964] (II) AMDGPU(0): v_active: 540 v_sync: 542 v_sync_end 547 v_blanking: 562 v_border: 0 [ 327.964] (II) AMDGPU(0): Supported detailed timing: [ 327.964] (II) AMDGPU(0): clock: 74.2 MHz Image Size: 597 x 336 mm [ 327.964] (II) AMDGPU(0): h_active: 1280 h_sync: 1390 h_sync_end 1430 h_blank_end 1650 h_border: 0 [ 327.964] (II) AMDGPU(0): v_active: 720 v_sync: 725 v_sync_end 730 v_blanking: 750 v_border: 0 [ 327.964] (II) AMDGPU(0): Supported detailed timing: [ 327.964] (II) AMDGPU(0): clock: 127.8 MHz Image Size: 597 x 336 mm [ 327.964] (II) AMDGPU(0): h_active: 1280 h_sync: 1328 h_sync_end 1360 h_blank_end 1440 h_border: 0 [ 327.964] (II) AMDGPU(0): v_active: 1440 v_sync: 1443 v_sync_end 1453 v_blanking: 1481 v_border: 0 [ 327.964] (II) AMDGPU(0): Number of EDID sections to follow: 1 [ 327.964] (II) AMDGPU(0): EDID (in hex): [ 327.964] (II) AMDGPU(0): 00ffffffffffff005a6332cc11010101 [ 327.964] (II) AMDGPU(0): 2f1c0103803c22782e4c55a9554d9d26 [ 327.964] (II) AMDGPU(0): 0f5054bfef80e1c0d100d1c0b300a9c0 [ 327.964] (II) AMDGPU(0): 8180810081c0565e00a0a0a029503020 [ 327.964] (II) AMDGPU(0): 350055502100001a000000ff00555032 [ 327.964] (II) AMDGPU(0): 3138343730303235310a000000fd0018 [ 327.964] (II) AMDGPU(0): 780f821e000a202020202020000000fc [ 327.964] (II) AMDGPU(0): 005650323737310a2020202020200190 [ 327.964] (II) AMDGPU(0): 020334f15b5f1005040302070609080f [ 327.964] (II) AMDGPU(0): 0e1f2021221413121116151a191e1d01 [ 327.964] (II) AMDGPU(0): 23097f07830100006b030c001300003c [ 327.964] (II) AMDGPU(0): 20002001023a801871382d40582c4500 [ 327.964] (II) AMDGPU(0): 55502100001e011d8018711c1620582c [ 327.964] (II) AMDGPU(0): 250055502100009e011d007251d01e20 [ 327.964] (II) AMDGPU(0): 6e28550055502100001ee73100a050a0 [ 327.964] (II) AMDGPU(0): 295030203a0055502100001a000000b7 [ 327.964] (--) AMDGPU(0): HDMI max TMDS frequency 300000KHz [ 327.964] (II) AMDGPU(0): Printing probed modes for output HDMI-A-1 [ 327.964] (II) AMDGPU(0): EDID for output DisplayPort-0 [ 327.964] (II) AMDGPU(0): Output HDMI-A-0 disconnected [ 327.964] (II) AMDGPU(0): Output HDMI-A-1 connected [ 327.964] (II) AMDGPU(0): Output DisplayPort-0 disconnected [ 327.964] (II) AMDGPU(0): Using exact sizes for initial modes [ 327.964] (II) AMDGPU(0): Output HDMI-A-1 using initial mode 2560x1440 +0+0 [ 327.964] (II) AMDGPU(0): mem size init: gart size :bf6ca000 vram size: s:1d906000 visible:1d906000 [ 327.964] (==) AMDGPU(0): DPI set to (96, 96) [ 327.964] (==) AMDGPU(0): Using gamma correction (1.0, 1.0, 1.0) [ 327.964] (II) Loading sub module "ramdac" [ 327.964] (II) LoadModule: "ramdac" [ 327.964] (II) Module "ramdac" already built-in [ 328.774] (II) AMDGPU(0): [DRI2] Setup complete [ 328.774] (II) AMDGPU(0): [DRI2] DRI driver: radeonsi [ 328.774] (II) AMDGPU(0): [DRI2] VDPAU driver: radeonsi [ 329.625] (II) AMDGPU(0): Front buffer pitch: 10240 bytes [ 329.642] (II) AMDGPU(0): SYNC extension fences enabled [ 329.642] (II) AMDGPU(0): Present extension enabled [ 329.642] (==) AMDGPU(0): DRI3 enabled [ 329.642] (==) AMDGPU(0): Backing store enabled [ 329.642] (II) AMDGPU(0): Direct rendering enabled [ 329.944] (II) AMDGPU(0): Use GLAMOR acceleration. [ 329.944] (II) AMDGPU(0): Acceleration enabled [ 329.944] (==) AMDGPU(0): DPMS enabled [ 329.944] (==) AMDGPU(0): Silken mouse enabled [ 329.965] (II) AMDGPU(0): Set up textured video (glamor) [ 330.109] (II) AMDGPU(0): Setting screen physical size to 677 x 381 [ 337.993] (II) AMDGPU(0): EDID vendor "VSC", prod id 52274 [ 337.993] (II) AMDGPU(0): Using EDID range info for horizontal sync [ 337.993] (II) AMDGPU(0): Using EDID range info for vertical refresh [ 337.993] (--) AMDGPU(0): HDMI max TMDS frequency 300000KHz [ 337.994] (II) AMDGPU(0): EDID vendor "VSC", prod id 52274 [ 337.994] (II) AMDGPU(0): Using hsync ranges from config file [ 337.994] (II) AMDGPU(0): Using vrefresh ranges from config file [ 337.995] (--) AMDGPU(0): HDMI max TMDS frequency 300000KHz rpm -q --whatprovides /usr/lib64/xorg/modules/drivers/amdgpu_drv.so xorg-x11-drv-amdgpu-21.0.0-1.fc34.x86_64