Peut-être qu’il y a des réglages au BIOS pour activer ou configurer les sorties vidéo d’une manière spécifique.
J’ai bien cherché dans les menus de l’UEFI mais j’ai rien trouvé qui pourrait correspondre à un bridage de la résolution sur les sorties vidéos (d’ailleurs quasiment rien sur le GPU intégré).
Après il y a une telle quantité d’options dans tous les sens qu’il est possible que j’en ai ratées.
On ne sait toujours pas si le test a été fait sans aucun adaptateur supplémentaire.
Je me suis peut-être mal exprimé mais dans un premier temps je teste avec uniquement un écran de connecté en HDMI et sans aucun adaptateur entre la carte mère et l’écran à part le câble HDMI bien sur ^^).
Je suggère de démarrer à partir d’une clé USB préparée avec une image ISO incluant les firmware privateurs (“non-free”) pour voir si le comportement est différent.
Alors j’ai essayé de booter une clé live debian mais j’ai le même soucis que quand j’ai installé Buster, au boot j’ai un écran noir avec un underscore et rien ne se passe quand j’utilise le clavier.
Je peux quand même avoir un tty avec ctrl+alt+F3.
J’ai également le même résultat quand je met à jour sur Buster depuis Stretch.
Par contre j’ai essayé avec un live Ubuntu 18.04.2 et là j’ai bien l’affichage en 1920x1080. J’ai même connecté le deuxième écran avec un cable HDMI et l’adaptateur HDMI-DisplayPort et j’ai également du 1920x1080 sur le deuxième écran.
Donc à priori c’est pas un soucis avec l’UEFI
Pour info le kernel utilisé est le 4.18.0-15 sur cette version d’Ubuntu, donc moins récent que celui dispo sur les backports stretch. Le driver graphique utilisé est i915.
$ lspci -kv
[...]
00:02.0 VGA compatible controller: Intel Corporation Device 3e98 (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device 8694
Flags: bus master, fast devsel, latency 0, IRQ 125
Memory at a0000000 (64-bit, non-prefetchable) [size=16M]
Memory at 90000000 (64-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
[...]
Ce serait juste un problème de configuration de Xorg sur Debian ?
Voila le retour de xrandr avec les deux écrans connectés
$xrandr
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 521mm x 293mm
1920x1080 60.00*+ 60.00 50.00 59.94
1680x1050 59.88
1600x900 60.00
1280x1024 60.02
1440x900 59.90
1280x800 59.91
1280x720 60.00 60.00 50.00 50.00 59.94
1024x768 70.07 60.00
800x600 72.19 60.32 56.25
720x576 50.00 50.00
720x480 60.00 60.00 59.94 59.94
640x480 72.81 66.67 60.00 59.94
720x400 70.08
HDMI-2 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 521mm x 293mm
1920x1080 60.00*+ 60.00 50.00 59.94
1680x1050 59.88
1600x900 60.00
1280x1024 60.02
1440x900 59.90
1280x800 59.91
1280x720 60.00 60.00 50.00 50.00 59.94
1024x768 70.07 60.00
800x600 72.19 60.32 56.25
720x576 50.00 50.00
720x480 60.00 60.00 59.94 59.94
640x480 72.81 66.67 60.00 59.94
720x400 70.08
@PascalHambourg Voila le retour de modinfo
# modinfo i915
filename: /lib/modules/4.19.0-0.bpo.5-amd64/kernel/drivers/gpu/drm/i915/i915.ko
license: GPL and additional rights
description: Intel Graphics
author: Intel Corporation
author: Tungsten Graphics, Inc.
firmware: i915/bxt_dmc_ver1_07.bin
firmware: i915/skl_dmc_ver1_27.bin
firmware: i915/kbl_dmc_ver1_04.bin
firmware: i915/cnl_dmc_ver1_07.bin
firmware: i915/glk_dmc_ver1_04.bin
firmware: i915/kbl_guc_ver9_39.bin
firmware: i915/bxt_guc_ver9_29.bin
firmware: i915/skl_guc_ver9_33.bin
firmware: i915/kbl_huc_ver02_00_1810.bin
firmware: i915/bxt_huc_ver01_07_1398.bin
firmware: i915/skl_huc_ver01_07_1398.bin
alias: pci:v00008086d00008A70sv*sd*bc03sc*i*
alias: pci:v00008086d00008A71sv*sd*bc03sc*i*
alias: pci:v00008086d00008A5Bsv*sd*bc03sc*i*
alias: pci:v00008086d00008A5Asv*sd*bc03sc*i*
alias: pci:v00008086d00008A52sv*sd*bc03sc*i*
alias: pci:v00008086d00008A5Dsv*sd*bc03sc*i*
alias: pci:v00008086d00008A5Csv*sd*bc03sc*i*
alias: pci:v00008086d00008A51sv*sd*bc03sc*i*
alias: pci:v00008086d00008A50sv*sd*bc03sc*i*
alias: pci:v00008086d00005A4Csv*sd*bc03sc*i*
alias: pci:v00008086d00005A44sv*sd*bc03sc*i*
alias: pci:v00008086d00005A5Csv*sd*bc03sc*i*
alias: pci:v00008086d00005A54sv*sd*bc03sc*i*
alias: pci:v00008086d00005A40sv*sd*bc03sc*i*
alias: pci:v00008086d00005A50sv*sd*bc03sc*i*
alias: pci:v00008086d00005A4Asv*sd*bc03sc*i*
alias: pci:v00008086d00005A42sv*sd*bc03sc*i*
alias: pci:v00008086d00005A5Asv*sd*bc03sc*i*
alias: pci:v00008086d00005A52sv*sd*bc03sc*i*
alias: pci:v00008086d00005A49sv*sd*bc03sc*i*
alias: pci:v00008086d00005A41sv*sd*bc03sc*i*
alias: pci:v00008086d00005A59sv*sd*bc03sc*i*
alias: pci:v00008086d00005A51sv*sd*bc03sc*i*
alias: pci:v00008086d00003EA4sv*sd*bc03sc*i*
alias: pci:v00008086d00003EA3sv*sd*bc03sc*i*
alias: pci:v00008086d00003EA2sv*sd*bc03sc*i*
alias: pci:v00008086d00003EA0sv*sd*bc03sc*i*
alias: pci:v00008086d00003EA1sv*sd*bc03sc*i*
alias: pci:v00008086d00003EA8sv*sd*bc03sc*i*
alias: pci:v00008086d00003EA7sv*sd*bc03sc*i*
alias: pci:v00008086d00003EA6sv*sd*bc03sc*i*
alias: pci:v00008086d00003EA5sv*sd*bc03sc*i*
alias: pci:v00008086d00003EA9sv*sd*bc03sc*i*
alias: pci:v00008086d00003E94sv*sd*bc03sc*i*
alias: pci:v00008086d00003E9Bsv*sd*bc03sc*i*
alias: pci:v00008086d00003E9Asv*sd*bc03sc*i*
alias: pci:v00008086d00003E96sv*sd*bc03sc*i*
alias: pci:v00008086d00003E92sv*sd*bc03sc*i*
alias: pci:v00008086d00003E91sv*sd*bc03sc*i*
alias: pci:v00008086d00003E99sv*sd*bc03sc*i*
alias: pci:v00008086d00003E93sv*sd*bc03sc*i*
alias: pci:v00008086d00003E90sv*sd*bc03sc*i*
alias: pci:v00008086d000087C0sv*sd*bc03sc*i*
alias: pci:v00008086d0000591Csv*sd*bc03sc*i*
alias: pci:v00008086d0000593Bsv*sd*bc03sc*i*
alias: pci:v00008086d00005927sv*sd*bc03sc*i*
alias: pci:v00008086d00005926sv*sd*bc03sc*i*
alias: pci:v00008086d00005923sv*sd*bc03sc*i*
alias: pci:v00008086d0000591Dsv*sd*bc03sc*i*
alias: pci:v00008086d0000591Asv*sd*bc03sc*i*
alias: pci:v00008086d0000591Bsv*sd*bc03sc*i*
alias: pci:v00008086d00005912sv*sd*bc03sc*i*
alias: pci:v00008086d0000591Esv*sd*bc03sc*i*
alias: pci:v00008086d00005921sv*sd*bc03sc*i*
alias: pci:v00008086d00005917sv*sd*bc03sc*i*
alias: pci:v00008086d00005916sv*sd*bc03sc*i*
alias: pci:v00008086d0000590Asv*sd*bc03sc*i*
alias: pci:v00008086d0000590Bsv*sd*bc03sc*i*
alias: pci:v00008086d00005908sv*sd*bc03sc*i*
alias: pci:v00008086d00005902sv*sd*bc03sc*i*
alias: pci:v00008086d0000590Esv*sd*bc03sc*i*
alias: pci:v00008086d00005906sv*sd*bc03sc*i*
alias: pci:v00008086d00005915sv*sd*bc03sc*i*
alias: pci:v00008086d00005913sv*sd*bc03sc*i*
alias: pci:v00008086d00003185sv*sd*bc03sc*i*
alias: pci:v00008086d00003184sv*sd*bc03sc*i*
alias: pci:v00008086d00005A85sv*sd*bc03sc*i*
alias: pci:v00008086d00005A84sv*sd*bc03sc*i*
alias: pci:v00008086d00001A85sv*sd*bc03sc*i*
alias: pci:v00008086d00001A84sv*sd*bc03sc*i*
alias: pci:v00008086d00000A84sv*sd*bc03sc*i*
alias: pci:v00008086d0000193Asv*sd*bc03sc*i*
alias: pci:v00008086d0000192Asv*sd*bc03sc*i*
alias: pci:v00008086d0000193Dsv*sd*bc03sc*i*
alias: pci:v00008086d0000193Bsv*sd*bc03sc*i*
alias: pci:v00008086d00001932sv*sd*bc03sc*i*
alias: pci:v00008086d0000192Dsv*sd*bc03sc*i*
alias: pci:v00008086d0000192Bsv*sd*bc03sc*i*
alias: pci:v00008086d00001927sv*sd*bc03sc*i*
alias: pci:v00008086d00001926sv*sd*bc03sc*i*
alias: pci:v00008086d00001923sv*sd*bc03sc*i*
alias: pci:v00008086d0000191Dsv*sd*bc03sc*i*
alias: pci:v00008086d0000191Asv*sd*bc03sc*i*
alias: pci:v00008086d0000191Bsv*sd*bc03sc*i*
alias: pci:v00008086d00001912sv*sd*bc03sc*i*
alias: pci:v00008086d0000191Esv*sd*bc03sc*i*
alias: pci:v00008086d00001921sv*sd*bc03sc*i*
alias: pci:v00008086d00001916sv*sd*bc03sc*i*
alias: pci:v00008086d0000190Asv*sd*bc03sc*i*
alias: pci:v00008086d0000190Bsv*sd*bc03sc*i*
alias: pci:v00008086d00001902sv*sd*bc03sc*i*
alias: pci:v00008086d0000190Esv*sd*bc03sc*i*
alias: pci:v00008086d00001906sv*sd*bc03sc*i*
alias: pci:v00008086d000022B3sv*sd*bc03sc*i*
alias: pci:v00008086d000022B2sv*sd*bc03sc*i*
alias: pci:v00008086d000022B1sv*sd*bc03sc*i*
alias: pci:v00008086d000022B0sv*sd*bc03sc*i*
alias: pci:v00008086d0000163Dsv*sd*bc03sc*i*
alias: pci:v00008086d0000163Asv*sd*bc03sc*i*
alias: pci:v00008086d0000163Esv*sd*bc03sc*i*
alias: pci:v00008086d0000163Bsv*sd*bc03sc*i*
alias: pci:v00008086d00001636sv*sd*bc03sc*i*
alias: pci:v00008086d00001632sv*sd*bc03sc*i*
alias: pci:v00008086d0000162Dsv*sd*bc03sc*i*
alias: pci:v00008086d0000162Asv*sd*bc03sc*i*
alias: pci:v00008086d0000162Esv*sd*bc03sc*i*
alias: pci:v00008086d0000162Bsv*sd*bc03sc*i*
alias: pci:v00008086d00001626sv*sd*bc03sc*i*
alias: pci:v00008086d00001622sv*sd*bc03sc*i*
alias: pci:v00008086d0000161Dsv*sd*bc03sc*i*
alias: pci:v00008086d0000161Asv*sd*bc03sc*i*
alias: pci:v00008086d0000161Esv*sd*bc03sc*i*
alias: pci:v00008086d0000161Bsv*sd*bc03sc*i*
alias: pci:v00008086d00001616sv*sd*bc03sc*i*
alias: pci:v00008086d00001612sv*sd*bc03sc*i*
alias: pci:v00008086d0000160Dsv*sd*bc03sc*i*
alias: pci:v00008086d0000160Asv*sd*bc03sc*i*
alias: pci:v00008086d0000160Esv*sd*bc03sc*i*
alias: pci:v00008086d0000160Bsv*sd*bc03sc*i*
alias: pci:v00008086d00001606sv*sd*bc03sc*i*
alias: pci:v00008086d00001602sv*sd*bc03sc*i*
alias: pci:v00008086d00000155sv*sd*bc03sc*i*
alias: pci:v00008086d00000157sv*sd*bc03sc*i*
alias: pci:v00008086d00000F33sv*sd*bc03sc*i*
alias: pci:v00008086d00000F32sv*sd*bc03sc*i*
alias: pci:v00008086d00000F31sv*sd*bc03sc*i*
alias: pci:v00008086d00000F30sv*sd*bc03sc*i*
alias: pci:v00008086d00000D26sv*sd*bc03sc*i*
alias: pci:v00008086d00000A2Esv*sd*bc03sc*i*
alias: pci:v00008086d00000A26sv*sd*bc03sc*i*
alias: pci:v00008086d00000C26sv*sd*bc03sc*i*
alias: pci:v00008086d00000D2Esv*sd*bc03sc*i*
alias: pci:v00008086d00000D2Bsv*sd*bc03sc*i*
alias: pci:v00008086d00000D2Asv*sd*bc03sc*i*
alias: pci:v00008086d00000D22sv*sd*bc03sc*i*
alias: pci:v00008086d00000A2Bsv*sd*bc03sc*i*
alias: pci:v00008086d00000A2Asv*sd*bc03sc*i*
alias: pci:v00008086d00000A22sv*sd*bc03sc*i*
alias: pci:v00008086d00000C2Esv*sd*bc03sc*i*
alias: pci:v00008086d00000C2Bsv*sd*bc03sc*i*
alias: pci:v00008086d00000C2Asv*sd*bc03sc*i*
alias: pci:v00008086d00000C22sv*sd*bc03sc*i*
alias: pci:v00008086d0000042Esv*sd*bc03sc*i*
alias: pci:v00008086d0000042Bsv*sd*bc03sc*i*
alias: pci:v00008086d0000042Asv*sd*bc03sc*i*
alias: pci:v00008086d00000422sv*sd*bc03sc*i*
alias: pci:v00008086d00000D16sv*sd*bc03sc*i*
alias: pci:v00008086d00000A1Esv*sd*bc03sc*i*
alias: pci:v00008086d00000A16sv*sd*bc03sc*i*
alias: pci:v00008086d00000C16sv*sd*bc03sc*i*
alias: pci:v00008086d00000426sv*sd*bc03sc*i*
alias: pci:v00008086d00000416sv*sd*bc03sc*i*
alias: pci:v00008086d00000D1Esv*sd*bc03sc*i*
alias: pci:v00008086d00000D1Bsv*sd*bc03sc*i*
alias: pci:v00008086d00000D1Asv*sd*bc03sc*i*
alias: pci:v00008086d00000D12sv*sd*bc03sc*i*
alias: pci:v00008086d00000A1Bsv*sd*bc03sc*i*
alias: pci:v00008086d00000A1Asv*sd*bc03sc*i*
alias: pci:v00008086d00000A12sv*sd*bc03sc*i*
alias: pci:v00008086d00000C1Esv*sd*bc03sc*i*
alias: pci:v00008086d00000C1Bsv*sd*bc03sc*i*
alias: pci:v00008086d00000C1Asv*sd*bc03sc*i*
alias: pci:v00008086d00000C12sv*sd*bc03sc*i*
alias: pci:v00008086d0000041Esv*sd*bc03sc*i*
alias: pci:v00008086d0000041Bsv*sd*bc03sc*i*
alias: pci:v00008086d0000041Asv*sd*bc03sc*i*
alias: pci:v00008086d00000412sv*sd*bc03sc*i*
alias: pci:v00008086d00000D06sv*sd*bc03sc*i*
alias: pci:v00008086d00000A0Esv*sd*bc03sc*i*
alias: pci:v00008086d00000A06sv*sd*bc03sc*i*
alias: pci:v00008086d00000C06sv*sd*bc03sc*i*
alias: pci:v00008086d00000406sv*sd*bc03sc*i*
alias: pci:v00008086d00000D0Esv*sd*bc03sc*i*
alias: pci:v00008086d00000D0Bsv*sd*bc03sc*i*
alias: pci:v00008086d00000D0Asv*sd*bc03sc*i*
alias: pci:v00008086d00000D02sv*sd*bc03sc*i*
alias: pci:v00008086d00000A0Bsv*sd*bc03sc*i*
alias: pci:v00008086d00000A0Asv*sd*bc03sc*i*
alias: pci:v00008086d00000A02sv*sd*bc03sc*i*
alias: pci:v00008086d00000C0Esv*sd*bc03sc*i*
alias: pci:v00008086d00000C0Bsv*sd*bc03sc*i*
alias: pci:v00008086d00000C0Asv*sd*bc03sc*i*
alias: pci:v00008086d00000C02sv*sd*bc03sc*i*
alias: pci:v00008086d0000040Esv*sd*bc03sc*i*
alias: pci:v00008086d0000040Bsv*sd*bc03sc*i*
alias: pci:v00008086d0000040Asv*sd*bc03sc*i*
alias: pci:v00008086d00000402sv*sd*bc03sc*i*
alias: pci:v00008086d0000016Asv*sd*bc03sc*i*
alias: pci:v00008086d00000162sv*sd*bc03sc*i*
alias: pci:v00008086d0000015Asv*sd*bc03sc*i*
alias: pci:v00008086d00000152sv*sd*bc03sc*i*
alias: pci:v00008086d00000166sv*sd*bc03sc*i*
alias: pci:v00008086d00000156sv*sd*bc03sc*i*
alias: pci:v00008086d0000016Asv0000152Dsd00008990bc03sc*i*
alias: pci:v00008086d00000126sv*sd*bc03sc*i*
alias: pci:v00008086d00000116sv*sd*bc03sc*i*
alias: pci:v00008086d00000106sv*sd*bc03sc*i*
alias: pci:v00008086d00000122sv*sd*bc03sc*i*
alias: pci:v00008086d00000112sv*sd*bc03sc*i*
alias: pci:v00008086d0000010Asv*sd*bc03sc*i*
alias: pci:v00008086d00000102sv*sd*bc03sc*i*
alias: pci:v00008086d00000046sv*sd*bc03sc*i*
alias: pci:v00008086d00000042sv*sd*bc03sc*i*
alias: pci:v00008086d0000A011sv*sd*bc03sc*i*
alias: pci:v00008086d0000A001sv*sd*bc03sc*i*
alias: pci:v00008086d00002E92sv*sd*bc03sc*i*
alias: pci:v00008086d00002E42sv*sd*bc03sc*i*
alias: pci:v00008086d00002E32sv*sd*bc03sc*i*
alias: pci:v00008086d00002E22sv*sd*bc03sc*i*
alias: pci:v00008086d00002E12sv*sd*bc03sc*i*
alias: pci:v00008086d00002E02sv*sd*bc03sc*i*
alias: pci:v00008086d00002A42sv*sd*bc03sc*i*
alias: pci:v00008086d00002A12sv*sd*bc03sc*i*
alias: pci:v00008086d00002A02sv*sd*bc03sc*i*
alias: pci:v00008086d000029D2sv*sd*bc03sc*i*
alias: pci:v00008086d000029C2sv*sd*bc03sc*i*
alias: pci:v00008086d000029B2sv*sd*bc03sc*i*
alias: pci:v00008086d000029A2sv*sd*bc03sc*i*
alias: pci:v00008086d00002992sv*sd*bc03sc*i*
alias: pci:v00008086d00002982sv*sd*bc03sc*i*
alias: pci:v00008086d00002972sv*sd*bc03sc*i*
alias: pci:v00008086d000027AEsv*sd*bc03sc*i*
alias: pci:v00008086d000027A2sv*sd*bc03sc*i*
alias: pci:v00008086d00002772sv*sd*bc03sc*i*
alias: pci:v00008086d00002592sv*sd*bc03sc*i*
alias: pci:v00008086d0000258Asv*sd*bc03sc*i*
alias: pci:v00008086d00002582sv*sd*bc03sc*i*
alias: pci:v00008086d00002572sv*sd*bc03sc*i*
alias: pci:v00008086d0000358Esv*sd*bc03sc*i*
alias: pci:v00008086d00003582sv*sd*bc03sc*i*
alias: pci:v00008086d00002562sv*sd*bc03sc*i*
alias: pci:v00008086d00003577sv*sd*bc03sc*i*
depends: drm,drm_kms_helper,video,i2c-algo-bit
retpoline: Y
intree: Y
name: i915
vermagic: 4.19.0-0.bpo.5-amd64 SMP mod_unload modversions
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
parm: modeset:Use kernel modesetting [KMS] (0=disable, 1=on, -1=force vga console preference [default]) (int)
parm: enable_dc:Enable power-saving display C-states. (-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6) (int)
parm: enable_fbc:Enable frame buffer compression for power savings (default: -1 (use per-chip default)) (int)
parm: lvds_channel_mode:Specify LVDS channel mode (0=probe BIOS [default], 1=single-channel, 2=dual-channel) (int)
parm: panel_use_ssc:Use Spread Spectrum Clock with panels [LVDS/eDP] (default: auto from VBT) (int)
parm: vbt_sdvo_panel_type:Override/Ignore selection of SDVO panel mode in the VBT (-2=ignore, -1=auto [default], index in VBT BIOS table) (int)
parm: reset:Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default]) (int)
parm: vbt_firmware:Load VBT from specified file under /lib/firmware (charp)
parm: error_capture:Record the GPU state following a hang. This information in /sys/class/drm/card<N>/error is vital for triaging and debugging hangs. (bool)
parm: enable_hangcheck:Periodically check GPU activity for detecting hangs. WARNING: Disabling this can cause system wide hangs. (default: true) (bool)
parm: enable_ppgtt:Override PPGTT usage. (-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space) (int)
parm: enable_psr:Enable PSR (0=disabled, 1=enabled) Default: -1 (use per-chip default) (int)
parm: alpha_support:Enable alpha quality driver support for latest hardware. See also CONFIG_DRM_I915_ALPHA_SUPPORT. (bool)
parm: disable_power_well:Disable display power wells when possible (-1=auto [default], 0=power wells always on, 1=power wells disabled when possible) (int)
parm: enable_ips:Enable IPS (default: true) (int)
parm: fastboot:Try to skip unnecessary mode sets at boot time (default: false) (bool)
parm: prefault_disable:Disable page prefaulting for pread/pwrite/reloc (default:false). For developers only. (bool)
parm: load_detect_test:Force-enable the VGA load detect code for testing (default:false). For developers only. (bool)
parm: force_reset_modeset_test:Force a modeset during gpu reset for testing (default:false). For developers only. (bool)
parm: invert_brightness:Invert backlight brightness (-1 force normal, 0 machine defaults, 1 force inversion), please report PCI device ID, subsystem vendor and subsystem device ID to dri-devel@lists.freedesktop.org, if your machine needs it. It will then be included in an upcoming module version. (int)
parm: disable_display:Disable display (default: false) (bool)
parm: mmio_debug:Enable the MMIO debug code for the first N failures (default: off). This may negatively affect performance. (int)
parm: verbose_state_checks:Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions. (bool)
parm: nuclear_pageflip:Force enable atomic functionality on platforms that don't have full support yet. (bool)
parm: edp_vswing:Ignore/Override vswing pre-emph table selection from VBT (0=use value from vbt [default], 1=low power swing(200mV),2=default swing(400mV)) (int)
parm: enable_guc:Enable GuC load for GuC submission and/or HuC load. Required functionality can be selected using bitmask values. (-1=auto, 0=disable [default], 1=GuC submission, 2=HuC load) (int)
parm: guc_log_level:GuC firmware logging level. Requires GuC to be loaded. (-1=auto [default], 0=disable, 1..4=enable with verbosity min..max) (int)
parm: guc_firmware_path:GuC firmware path to use instead of the default one (charp)
parm: huc_firmware_path:HuC firmware path to use instead of the default one (charp)
parm: dmc_firmware_path:DMC firmware path to use instead of the default one (charp)
parm: enable_dp_mst:Enable multi-stream transport (MST) for new DisplayPort sinks. (default: true) (bool)
parm: enable_dpcd_backlight:Enable support for DPCD backlight control (default:false) (bool)
parm: enable_gvt:Enable support for Intel GVT-g graphics virtualization host support(default:false) (bool)