Dmesg
<6> [320.503986] [IGT] i915_selftest: starting dynamic subtest gem_contexts
<5> [320.585195] Setting dangerous option live_selftests - tainting kernel
<7> [320.630637] i915 0000:00:02.0: [drm:i915_driver_probe [i915]] WOPCM: 2048K
<7> [320.630937] i915 0000:00:02.0: [drm:intel_uc_init_early [i915]] enable_guc=0 (guc:no submission:no huc:no slpc:no)
<7> [320.631079] i915 0000:00:02.0: [drm:intel_pch_type [i915]] Found Ice Lake PCH
<7> [320.631164] i915 0000:00:02.0: [drm:intel_power_domains_init [i915]] Allowed DC state mask 0a
<7> [320.631409] i915 0000:00:02.0: [drm:intel_uncore_init_mmio [i915]] unclaimed mmio detected on uncore init, clearing
<7> [320.631580] i915 0000:00:02.0: [drm:intel_device_info_runtime_init [i915]] rawclk rate: 19200 kHz
<7> [320.632020] i915 0000:00:02.0: [drm:intel_engines_init_mmio [i915]] vcs2 fused off
<7> [320.632122] i915 0000:00:02.0: [drm:intel_engines_init_mmio [i915]] vdbox enable: 0001, instances: 0001
<7> [320.632213] i915 0000:00:02.0: [drm:intel_engines_init_mmio [i915]] vebox enable: 0001, instances: 0001
<7> [320.632552] i915 0000:00:02.0: [drm:i915_ggtt_probe_hw [i915]] GGTT size = 4096M
<7> [320.632711] i915 0000:00:02.0: [drm:i915_ggtt_probe_hw [i915]] GMADR size = 256M
<7> [320.632818] i915 0000:00:02.0: [drm:i915_ggtt_probe_hw [i915]] DSM size = 60M
<6> [320.632924] i915 0000:00:02.0: [drm] VT-d active for gfx access
<6> [320.632935] i915 0000:00:02.0: vgaarb: deactivate vga console
<6> [320.633148] i915 0000:00:02.0: [drm] Transparent Hugepage mode 'huge=within_size'
<7> [320.633262] i915 0000:00:02.0: [drm:i915_gem_init_stolen [i915]] GEN6_STOLEN_RESERVED = 0x000000004fa000c7
<7> [320.633386] i915 0000:00:02.0: [drm:i915_gem_init_stolen [i915]] Memory reserved for graphics device: 61440K, usable: 59392K
<7> [320.633730] i915 0000:00:02.0: [drm:intel_gvt_init [i915]] GVT-g is disabled by kernel params
<7> [320.633871] i915 0000:00:02.0: [drm:intel_opregion_setup [i915]] graphic opregion physical addr: 0x44f27018
<7> [320.634036] i915 0000:00:02.0: [drm:intel_opregion_setup [i915]] ACPI OpRegion version 2.1.0
<7> [320.634175] i915 0000:00:02.0: [drm:intel_opregion_setup [i915]] Public ACPI methods supported
<7> [320.634314] i915 0000:00:02.0: [drm:intel_opregion_setup [i915]] SWSCI supported
<7> [320.640096] i915 0000:00:02.0: [drm:intel_opregion_setup [i915]] SWSCI GBDA callbacks 00000cb3, SBCB callbacks 00300583
<7> [320.640256] i915 0000:00:02.0: [drm:intel_opregion_setup [i915]] ASLE supported
<7> [320.640390] i915 0000:00:02.0: [drm:intel_opregion_setup [i915]] ASLE extension supported
<7> [320.640518] i915 0000:00:02.0: [drm:intel_opregion_setup [i915]] Found valid VBT in ACPI OpRegion (Mailbox #4)
<7> [320.640660] i915 0000:00:02.0: [drm:skl_get_dram_info [i915]] DRAM type: DDR4
<7> [320.640755] i915 0000:00:02.0: [drm:skl_dram_get_dimm_info [i915]] CH0 DIMM L size: 64 Gb, width: X8, ranks: 1, 16Gb DIMMs: no
<7> [320.640845] i915 0000:00:02.0: [drm:skl_dram_get_dimm_info [i915]] CH0 DIMM S size: 0 Gb, width: X0, ranks: 0, 16Gb DIMMs: no
<7> [320.640933] i915 0000:00:02.0: [drm:skl_dram_get_channel_info [i915]] CH0 ranks: 1, 16Gb DIMMs: no
<7> [320.641019] i915 0000:00:02.0: [drm:skl_dram_get_dimm_info [i915]] CH1 DIMM L size: 64 Gb, width: X8, ranks: 1, 16Gb DIMMs: no
<7> [320.641099] i915 0000:00:02.0: [drm:skl_dram_get_dimm_info [i915]] CH1 DIMM S size: 0 Gb, width: X0, ranks: 0, 16Gb DIMMs: no
<7> [320.641177] i915 0000:00:02.0: [drm:skl_dram_get_channel_info [i915]] CH1 ranks: 1, 16Gb DIMMs: no
<7> [320.641251] i915 0000:00:02.0: [drm:skl_get_dram_info [i915]] Memory configuration is symmetric? yes
<7> [320.641411] i915 0000:00:02.0: [drm:intel_dram_detect [i915]] DRAM channels: 2
<7> [320.641487] i915 0000:00:02.0: [drm:i915_driver_probe [i915]] Watermark level 0 adjustment needed: no
<7> [320.641573] i915 0000:00:02.0: [drm:icl_get_qgv_points.constprop.7 [i915]] QGV 0: DCLK=2134 tRP=15 tRDPRE=8 tRAS=35 tRCD=15 tRC=50
<7> [320.641767] i915 0000:00:02.0: [drm:icl_get_qgv_points.constprop.7 [i915]] QGV 1: DCLK=2667 tRP=19 tRDPRE=10 tRAS=43 tRCD=19 tRC=62
<7> [320.641905] i915 0000:00:02.0: [drm:icl_get_qgv_points.constprop.7 [i915]] QGV 2: DCLK=2401 tRP=17 tRDPRE=9 tRAS=39 tRCD=17 tRC=56
<7> [320.642053] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW0 / QGV 0: num_planes=4 deratedbw=9834
<7> [320.642173] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW0 / QGV 1: num_planes=4 deratedbw=9911
<7> [320.642292] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW0 / QGV 2: num_planes=4 deratedbw=9878
<7> [320.642426] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW1 / QGV 0: num_planes=2 deratedbw=14899
<7> [320.642544] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW1 / QGV 1: num_planes=2 deratedbw=16171
<7> [320.642730] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW1 / QGV 2: num_planes=2 deratedbw=15583
<7> [320.642848] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW2 / QGV 0: num_planes=1 deratedbw=20069
<7> [320.642962] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW2 / QGV 1: num_planes=1 deratedbw=22759
<7> [320.643076] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW2 / QGV 2: num_planes=1 deratedbw=21483
<7> [320.643198] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW3 / QGV 0: num_planes=1 deratedbw=24280
<7> [320.643345] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW3 / QGV 1: num_planes=1 deratedbw=25000
<7> [320.643467] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW3 / QGV 2: num_planes=1 deratedbw=25000
<7> [320.643588] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW4 / QGV 0: num_planes=1 deratedbw=25000
<7> [320.643719] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW4 / QGV 1: num_planes=1 deratedbw=25000
<7> [320.643835] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW4 / QGV 2: num_planes=1 deratedbw=25000
<7> [320.643951] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW5 / QGV 0: num_planes=1 deratedbw=25000
<7> [320.644075] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW5 / QGV 1: num_planes=1 deratedbw=25000
<7> [320.644202] i915 0000:00:02.0: [drm:icl_get_bw_info.constprop.6 [i915]] BW5 / QGV 2: num_planes=1 deratedbw=25000
<7> [320.644815] i915 0000:00:02.0: [drm:intel_bios_init [i915]] Set default to SSC at 120000 kHz
<7> [320.644960] i915 0000:00:02.0: [drm:intel_bios_init [i915]] VBT signature "$VBT ICELAKE ", BDB version 224
<7> [320.645092] i915 0000:00:02.0: [drm:intel_bios_init [i915]] BDB_GENERAL_FEATURES int_tv_support 0 int_crt_support 0 lvds_use_ssc 0 lvds_ssc_freq 120000 display_clock_mode 1 fdi_rx_polarity_inverted 0
<7> [320.645216] i915 0000:00:02.0: [drm:intel_bios_init [i915]] crt_ddc_bus_pin: 2
<7> [320.645337] i915 0000:00:02.0: [drm:intel_bios_init [i915]] Found VBT child device with type 0x1806
<7> [320.645463] i915 0000:00:02.0: [drm:intel_bios_init [i915]] Found VBT child device with type 0x60d6
<7> [320.645584] i915 0000:00:02.0: [drm:intel_bios_init [i915]] Found VBT child device with type 0x68c6
<7> [320.645735] i915 0000:00:02.0: [drm:intel_bios_init [i915]] Found VBT child device with type 0x68c6
<7> [320.645867] i915 0000:00:02.0: [drm:intel_bios_init [i915]] Found VBT child device with type 0x68c6
<7> [320.645993] i915 0000:00:02.0: [drm:intel_bios_init [i915]] Found VBT child device with type 0x68c6
<7> [320.648644] i915 0000:00:02.0: [drm:intel_opregion_get_panel_type [i915]] Ignoring OpRegion panel type (0)
<7> [320.648840] i915 0000:00:02.0: [drm:intel_bios_init [i915]] Panel type: 2 (VBT)
<7> [320.648976] i915 0000:00:02.0: [drm:intel_bios_init [i915]] DRRS supported mode is seamless
<7> [320.649116] i915 0000:00:02.0: [drm:intel_bios_init [i915]] Found panel mode in BIOS VBT legacy lfp table:
<7> [320.649241] [drm:drm_mode_debug_printmodeline] Modeline "1024x768": 60 65000 1024 1048 1184 1344 768 771 777 806 0x8 0xa
<7> [320.649248] i915 0000:00:02.0: [drm:intel_bios_init [i915]] VBT initial LVDS value 300
<7> [320.649401] i915 0000:00:02.0: [drm:intel_bios_init [i915]] VBT backlight PWM modulation frequency 200 Hz, active high, min brightness 6, level 255, controller 0
<7> [320.649526] i915 0000:00:02.0: [drm:intel_bios_init [i915]] DRRS State Enabled:1