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Jun 30th, 2016
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  1. parm: modeset:Use kernel modesetting [KMS] (0=disable, 1=on, -1=force vga console preference [default]) (int)
  2. parm: panel_ignore_lid:Override lid status (0=autodetect, 1=autodetect disabled [default], -1=force lid closed, -2=force lid open) (int)
  3. parm: semaphores:Use semaphores for inter-ring sync (default: -1 (use per-chip defaults)) (int)
  4. parm: enable_rc6:Enable power-saving render C-state 6. Different stages can be selected via bitmask values (0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. default: -1 (use per-chip default) (int)
  5. parm: enable_dc:Enable power-saving display C-states. (-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6) (int)
  6. parm: enable_fbc:Enable frame buffer compression for power savings (default: -1 (use per-chip default)) (int)
  7. parm: lvds_channel_mode:Specify LVDS channel mode (0=probe BIOS [default], 1=single-channel, 2=dual-channel) (int)
  8. parm: lvds_use_ssc:Use Spread Spectrum Clock with panels [LVDS/eDP] (default: auto from VBT) (int)
  9. 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)
  10. parm: reset:Attempt GPU resets (default: true) (bool)
  11. parm: enable_hangcheck:Periodically check GPU activity for detecting hangs. WARNING: Disabling this can cause system wide hangs. (default: true) (bool)
  12. parm: enable_ppgtt:Override PPGTT usage. (-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space) (int)
  13. parm: enable_execlists:Override execlists usage. (-1=auto [default], 0=disabled, 1=enabled) (int)
  14. parm: enable_psr:Enable PSR (0=disabled, 1=enabled - link mode chosen per-platform, 2=force link-standby mode, 3=force link-off mode) Default: -1 (use per-chip default) (int)
  15. parm: preliminary_hw_support:Enable preliminary hardware support. (int)
  16. 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)
  17. parm: enable_ips:Enable IPS (default: true) (int)
  18. parm: fastboot:Try to skip unnecessary mode sets at boot time (default: false) (bool)
  19. parm: prefault_disable:Disable page prefaulting for pread/pwrite/reloc (default:false). For developers only. (bool)
  20. parm: load_detect_test:Force-enable the VGA load detect code for testing (default:false). For developers only. (bool)
  21. 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)
  22. parm: disable_display:Disable display (default: false) (bool)
  23. parm: enable_cmd_parser:Enable command parsing (1=enabled [default], 0=disabled) (int)
  24. parm: use_mmio_flip:use MMIO flips (-1=never, 0=driver discretion [default], 1=always) (int)
  25. parm: mmio_debug:Enable the MMIO debug code for the first N failures (default: off). This may negatively affect performance. (int)
  26. parm: verbose_state_checks:Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions. (bool)
  27. parm: nuclear_pageflip:Force atomic modeset functionality; asynchronous mode is not yet supported. (default: false). (bool)
  28. 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)
  29. parm: enable_guc_submission:Enable GuC submission (default:false) (bool)
  30. parm: guc_log_level:GuC firmware logging level (-1:disabled (default), 0-3:enabled) (int)
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