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Can't adjust brightness on M4800


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I got a M4800 with a Quadro M2200, it's pretty nice but I can't seem to control the brightness from within Windows. If I use the hotkey I get the UI element of the brightness change but it remains at its current brightness. The power options slider doesn't work either. Doesn't matter if plugged in or not. Only the BIOS brightness slider appears to change anything for Windows. Oddly Linux Mint 21 runs at a very low brightness, and I can adjust it, but only down, down enough where the backlight just turns off.

 

Precision M4800 - i7 4810MQ, 32GB RAM, Nvidia Quadro M2200

Thinkpad T430 - i7 3630QM, 16GB RAM, Intel HD 4000, 1080p display mod

Main PC - AMD Ryzen 9 5950X, 64GB RAM, RTX 2080 Ti

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This is a common problem with an "unsupported GPU" in this system.  You should be able to set the brightness level in the BIOS.  If you're running with Optimus / graphics switching turned on, it should work but you might have to use the Intel GPU driver package from Dell, not the one built-in to Windows or from Intel's web site.  If you're running with Optimus / graphics switching turned off, I don't know if there is really a solution to this.  😕

 

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Dell Precision 7770 (personal) • Dell Precision 7560 (work) • Full specs in spoiler block below
Info posts (Dell) — Dell Precision key postsDell driver RSS feeds • Dell Fan Management — override fan behavior
Info posts (Windows) — Turbo boost toggle • The problem with Windows 11 • About Windows 10 LTSC

Spoiler

Dell Precision 7770 (personal)

  • Intel Core i9-12950HX ("Alder Lake"), 8P+8E
    • 8× P cores ("Golden Cove"): 2.3 GHz base, 5.0 GHz turbo, hyperthreading
    • 8× E cores ("Gracemont"): 1.7 GHz base, 3.6 GHz turbo
  • 128GB DDR5-3600 (CAMM)
  • NVIDIA GeForce RTX 3080 Ti 16GB (DGFF)
  • Storage:
    • 2TB system drive: Samsung 980 Pro, PCIe4
    • 24TB additional storage: MDRAID, RAID 0
      • 2× 8TB Sabrent Rocket 4 Plus, PCIe4
      • 1× 8TB Inland Performance Plus, PCIe4
  • Kubuntu 23.04 (KDE Plasma 5.27, Linux kernel 6.2)
  • 17.3" 3940×2160 120 Hz display
  • Intel Wi-Fi AX211 (Wi-Fi 6E + Bluetooth)
  • 93Wh battery
  • IR webcam
  • Fingerprint reader

 

Dell Precision 7560 (work)

  • Intel Xeon W-11955M ("Tiger Lake")
    • 8×2.6 GHz base, 5.0 GHz turbo, hyperthreading ("Willow Cove")
  • 64GB DDR4-3200 ECC
  • NVIDIA RTX A2000 4GB
  • Storage:
    • 512GB system drive (Micron 2300)
    • 4TB additional storage (Sabrent Rocket Q4)
  • Windows 10 Enterprise LTSC 2021
  • 15.6" 3940×2160 display
  • Intel Wi-Fi AX210 (Wi-Fi 6E + Bluetooth)
  • 95Wh battery
  • IR webcam
  • Fingerprint reader

 

Previous

  • Dell Precision 7530, 7510, M4800, M6700
  • Dell Latitude E6520
  • Dell Inspiron 1720, 5150
  • Dell Latitude CPi
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Hmm, why have I not seen this discussed anywhere else? Also why is it an issue with this model? I remember my 8770W having no issues with the 980m when it worked.

Precision M4800 - i7 4810MQ, 32GB RAM, Nvidia Quadro M2200

Thinkpad T430 - i7 3630QM, 16GB RAM, Intel HD 4000, 1080p display mod

Main PC - AMD Ryzen 9 5950X, 64GB RAM, RTX 2080 Ti

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This sort of issue popped up semi-regularly on NBR back when these systems were "old enough to have GPU replacements done" but not yet "really old" (2015-2018 timeframe?).  There isn't a whole lot of discussion of the pre-7000 series systems here on NBT.

  • Thumb Up 1

Dell Precision 7770 (personal) • Dell Precision 7560 (work) • Full specs in spoiler block below
Info posts (Dell) — Dell Precision key postsDell driver RSS feeds • Dell Fan Management — override fan behavior
Info posts (Windows) — Turbo boost toggle • The problem with Windows 11 • About Windows 10 LTSC

Spoiler

Dell Precision 7770 (personal)

  • Intel Core i9-12950HX ("Alder Lake"), 8P+8E
    • 8× P cores ("Golden Cove"): 2.3 GHz base, 5.0 GHz turbo, hyperthreading
    • 8× E cores ("Gracemont"): 1.7 GHz base, 3.6 GHz turbo
  • 128GB DDR5-3600 (CAMM)
  • NVIDIA GeForce RTX 3080 Ti 16GB (DGFF)
  • Storage:
    • 2TB system drive: Samsung 980 Pro, PCIe4
    • 24TB additional storage: MDRAID, RAID 0
      • 2× 8TB Sabrent Rocket 4 Plus, PCIe4
      • 1× 8TB Inland Performance Plus, PCIe4
  • Kubuntu 23.04 (KDE Plasma 5.27, Linux kernel 6.2)
  • 17.3" 3940×2160 120 Hz display
  • Intel Wi-Fi AX211 (Wi-Fi 6E + Bluetooth)
  • 93Wh battery
  • IR webcam
  • Fingerprint reader

 

Dell Precision 7560 (work)

  • Intel Xeon W-11955M ("Tiger Lake")
    • 8×2.6 GHz base, 5.0 GHz turbo, hyperthreading ("Willow Cove")
  • 64GB DDR4-3200 ECC
  • NVIDIA RTX A2000 4GB
  • Storage:
    • 512GB system drive (Micron 2300)
    • 4TB additional storage (Sabrent Rocket Q4)
  • Windows 10 Enterprise LTSC 2021
  • 15.6" 3940×2160 display
  • Intel Wi-Fi AX210 (Wi-Fi 6E + Bluetooth)
  • 95Wh battery
  • IR webcam
  • Fingerprint reader

 

Previous

  • Dell Precision 7530, 7510, M4800, M6700
  • Dell Latitude E6520
  • Dell Inspiron 1720, 5150
  • Dell Latitude CPi
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Share on other sites

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