Arch Linux

lobotomiteqt5

Member

Registered: 2026-01-02

Posts: 12

screen turns insanely bright during boot when using igpu (vga)

during systemd starting a lot of stuff part my screen dims and everything becomes insanely bright, black becomes gray and light on light color look very blurred
i dont know what to attach here so heres dmesg starting from first drm mention

[    5.723229] i915 0000:00:02.0: [drm] Found skylake (device ID 1912) integrated display version 9.00 stepping G0
[    5.725688] ee1004 0-0050: 512 byte EE1004-compliant SPD EEPROM, read-only
[    5.735631] iTCO_wdt iTCO_wdt: Found a Intel PCH TCO device (Version=4, TCOBASE=0x0400)
[    5.735720] iTCO_wdt iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[    5.737190] Console: switching to colour dummy device 80x25
[    5.737346] i915 0000:00:02.0: vgaarb: deactivate vga console
[    5.741451] i915 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=io+mem:owns=io+mem
[    5.743570] [drm] forcing DP-1 connector on
[    5.744141] i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/skl_dmc_ver1_27.bin (v1.27)
[    5.766947] i915 0000:00:02.0: [drm] Registered 2 planes with drm panic
[    5.774451] [drm] Initialized i915 1.6.0 for 0000:00:02.0 on minor 1
[    5.778612] ACPI: video: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[    5.779035] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input13
[    5.844899] usbcore: registered new interface driver snd-usb-audio
[    5.897580] fbcon: i915drmfb (fb0) is primary device
[    5.900915] Console: switching to colour frame buffer device 240x67
[    5.919617] i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device
[    5.928883] intel_tcc_cooling: Programmable TCC Offset detected
[    5.933853] snd_hda_intel 0000:00:1f.3: enabling device (0000 -> 0002)
[    5.973863] intel_rapl_common: Found RAPL domain package
[    5.973867] intel_rapl_common: Found RAPL domain core
[    5.973869] intel_rapl_common: Found RAPL domain uncore
[    5.973870] intel_rapl_common: Found RAPL domain dram
[    5.983203] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops intel_audio_component_bind_ops [i915])
[    6.027289] snd_hda_codec_alc882 hdaudioC1D0: autoconfig for ALC887-VD: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:line
[    6.027294] snd_hda_codec_alc882 hdaudioC1D0:    speaker_outs=1 (0x15/0x0/0x0/0x0/0x0)
[    6.027296] snd_hda_codec_alc882 hdaudioC1D0:    hp_outs=1 (0x1b/0x0/0x0/0x0/0x0)
[    6.027298] snd_hda_codec_alc882 hdaudioC1D0:    mono: mono_out=0x0
[    6.027299] snd_hda_codec_alc882 hdaudioC1D0:    inputs:
[    6.027301] snd_hda_codec_alc882 hdaudioC1D0:      Rear Mic=0x18
[    6.027302] snd_hda_codec_alc882 hdaudioC1D0:      Front Mic=0x19
[    6.027304] snd_hda_codec_alc882 hdaudioC1D0:      Line=0x1a
[    6.057407] input: HDA Intel PCH Rear Mic as /devices/pci0000:00/0000:00:1f.3/sound/card1/input14
[    6.057455] input: HDA Intel PCH Front Mic as /devices/pci0000:00/0000:00:1f.3/sound/card1/input15
[    6.057496] input: HDA Intel PCH Line as /devices/pci0000:00/0000:00:1f.3/sound/card1/input16
[    6.057534] input: HDA Intel PCH Line Out as /devices/pci0000:00/0000:00:1f.3/sound/card1/input17
[    6.057571] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1f.3/sound/card1/input18
[    6.057609] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card1/input19
[    6.059641] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card1/input20
[    6.059704] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card1/input21
[    6.104462] Generic FE-GE Realtek PHY r8169-0-200:00: attached PHY driver (mii_bus:phy_addr=r8169-0-200:00, irq=MAC)
[    6.234598] r8169 0000:02:00.0 enp2s0: Link is Down
[    6.759350] tun: Universal TUN/TAP device driver, 1.6
[    8.750557] r8169 0000:02:00.0 enp2s0: Link is Up - 100Mbps/Full - flow control off
[   27.575180] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[   27.582216] Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[   27.582349] Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600'

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 74,663

Re: screen turns insanely bright during boot when using igpu (vga)

Does it tune down afterwards?
https://wiki.archlinux.org/title/Backlight

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