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I'm a complete novice when it comes to Linux, this is my first time installing Ubuntu. I've Msi Bravo 15.

CPU: AMD Ryzen 5 4600H GPU: AMD Radeon 5500M

I'm unable to change the brightness of my screen, I booted in replacing quiet splash with nomodeset. I ran lshw -c video as written in one of the answers that I read.

*-display UNCLAIMED

    description: Display controller
    product: Navi 14 [Radeon RX 5500/5500M / Pro 5500M]
   vendor: Advanced Micro Devices, Inc. [AMD/ATI]
   physical id: 0
   bus info: pci@0000:03:00.0
   version: c1
   width: 64 bits
   clock: 33MHz
   capabilities: pm pciexpress msi cap_list
   configuration: latency=0
   resources: memory:d0000000-dfffffff memory:e0000000-e01fffff memory:fe500000-fe57ffff memory:fe580000-fe59ffff

*-display UNCLAIMED

   description: VGA compatible controller
   product: Renoir
   vendor: Advanced Micro Devices, Inc. [AMD/ATI]
   physical id: 0
   bus info: pci@0000:07:00.0
   version: c7
   width: 64 bits
   clock: 33MHz
   capabilities: pm pciexpress msi msix vga_controller bus_master cap_list
   configuration: latency=0
   resources: memory:b0000000-bfffffff memory:c0000000-c01fffff ioport:e000(size=256) memory:fe400000-fe47ffff

The kernel version is 5.8.0 (if relevant)

I've seen a few solutions which I believe might work such as this and this, but even after googling a lot about the commands, I'm unable to make sense of it. The answers are particularly written for users who have a bit of history with Linux I believe. I've already tried updating every driver to latest version. Based on the comment, here is the output for lspci -nnk | grep -i vga -A2

07:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Renoir [1002:1636] (rev c7) Subsystem: Micro-Star International Co., Ltd. [MSI] Renoir [1462:12b5] Kernel modules: amdgpu

Another thing to note is that, the model I have was probably made for Indian market, it has american style keyboard layout, and 16 gigs of RAM instead of 8 on the German one.

Can someone provide a more detailed solution as what to do?

Chirag Mehta
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  • It is not quit clear what you have installed. A german user got it running. Please open a terminal and type lspci -nnk | grep -i vga -A2. Copy the output and paste it into your question. It should contain a line such as: Kernel driver in use: amdgpu – kanehekili May 29 '21 at 19:59
  • @kanehekili, I've added that information. – Chirag Mehta May 30 '21 at 03:29
  • I'm not entirely sure what happened but now I'm able to change brightness and it doesn't say display unclaimed anymore. works without nomodeset. I didn't change anything and it just worked. :D – Chirag Mehta May 30 '21 at 04:20
  • However, I think I must add it. I had been testing lswh -c video on nomodeset because my screen loaded into darkness., In this mode, I still get display unclaimed, but now that I don't need nomodeset anymore, my problem is solved. – Chirag Mehta May 31 '21 at 17:14
  • Yes - nomodeset should only be an emergency flag to get into your system and fix it. Great you've got it solved. – kanehekili May 31 '21 at 21:35

0 Answers0