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Armand Karlsen
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Joined: 18 Aug 2005
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Location: London, UK
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 Posted: Sun Sep 15, 2024 7:03 pm Post subject: Trying to setup Xorg, fails to run |
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I'm trying to setup Gentoo with a DE on my desktop machine with Nvidia graphics card, after ditching Windows. Going through the Xorg/Guide instructions I get to the first test run of startx, but X fails to run with an error about "..no screens found..". This seems to happen with both the open-source nouveau drivers and proprietary nvidia-drivers, and in particular the 'nvidia' kernel module fails to load with | Code: | | modprobe: ERROR: could not insert 'nvidia': Unknown symbol in module, or unknown parameter (see dmesg) |
and then dmesg shows | Code: | | [ 2649.885066] nvidia: Unknown symbol drm_gem_object_free (err -2) |
To be honest I'm pretty lost, so I'd appreciate any help I can get.
For background, the desktop is running a Threadripper 1900X CPU, nvidia RTX 2080 Ti GPU. Kernel is linux-6.6.47-gentoo. Current xorg-server that was pulled in is 21.1.13-r1. Nvidia-drivers is 550.107.02-r1. |
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Banana
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Armand Karlsen
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Joined: 18 Aug 2005
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Location: London, UK
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| Posted: Sun Sep 15, 2024 9:08 pm Post subject: |
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So far, I've been trying to go through the "NVIDIA/nvidia-drivers" guide on the wiki, following the manually-configured kernel section (that's how I did the base system). As far as I can see, I've set the mentioned kernel options; I've set VIDEO_CARDS="nvidia" in make.conf; nvidia-drivers emerged without obvious failure
If I had to guess, it feels like something broke further back in the overall process of installing Linux, but I don't know quite where to look. |
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flexibeast
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Joined: 04 Apr 2022
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Location: Naarm/Melbourne, Australia
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| Posted: Sun Sep 15, 2024 11:45 pm Post subject: Re: Trying to setup Xorg, fails to run |
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| Armand Karlsen wrote: | | Code: | | [ 2649.885066] nvidia: Unknown symbol drm_gem_object_free (err -2) |
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`drm_gem_object_free` is provided by the kernel, so i'm wondering whether the issue is related to your kernel config. i'm not using Nvidia hardware, but two GEM-related lines in my running kernel config are:
| Code: | CONFIG_DRM_GEM_SHMEM_HELPER=m
# CONFIG_DRM_VGEM is not set |
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grknight
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Joined: 20 Feb 2015
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| Posted: Sun Sep 15, 2024 11:57 pm Post subject: |
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| flexibeast wrote: | | Armand Karlsen wrote: | | Code: | | [ 2649.885066] nvidia: Unknown symbol drm_gem_object_free (err -2) |
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`drm_gem_object_free` is provided by the kernel, so i'm wondering whether the issue is related to your kernel config. i'm not using Nvidia hardware, but two GEM-related lines in my running kernel config are: |
That symbol is provided by CONFIG_DRM. DRM support is required for any graphics card. |
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flexibeast
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| Posted: Mon Sep 16, 2024 12:58 am Post subject: |
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| grknight wrote: | | That symbol is provided by CONFIG_DRM. |
Ah okay. - This might be a long shot, but is there any straightforward (or even "relatively straightforward") way of determining which kernel config option is associated with a given symbol? |
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Banana
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Armand Karlsen
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Joined: 18 Aug 2005
Posts: 52
Location: London, UK
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| Posted: Mon Sep 16, 2024 7:17 pm Post subject: |
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- As a test, I tried compiling the kernel with CONFIG_DRM unset and that spat out a whole heap of "DEPMOD: WARNING:..." complaining that nvidia.ko "..needs unknown symbol..." for various "drm_..." symbols.
- Booting with that kernel and re-emerging nvidia-drivers gives a red-starred notice at the end about "..CONFIG_DRM_KMS_HELPER: is not set but needed for Xorg auto-detection..." and suggests selecting a DRM device "even if not used".
- That didn't sound so good, so I enabled DRM once more and added the Intel i915 item. Boot with that and re-emerge nvidia drivers. No red-starred notice, and Xorg still fails with an error about "no screens"; HOWEVER, the nvidia module _does_ now show up in lsmod, and there is no "nvidia: unknown symbol..." line in dmesg. So that's progress, I hope
EDIT: ...aaand the module broke again, for some reason that's not clear to me... I'm getting more of a feeling that something's more deeply mucked up in this installation. I'm starting to lean more towards scrubbing and starting again |
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Amity88
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Joined: 03 Jul 2010
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Location: Third planet from the Sun
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| Posted: Tue Sep 17, 2024 9:14 am Post subject: |
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Could you link me to a pastebin of your kernel .config? I just brought up a system with a GTX1050Ti using the proprietary drivers.
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Armand Karlsen
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Joined: 18 Aug 2005
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Location: London, UK
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| Posted: Tue Sep 17, 2024 8:42 pm Post subject: |
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| Amity88 wrote: | | Could you link me to a pastebin of your kernel .config? I just brought up a system with a GTX1050Ti using the proprietary drivers. |
Here's the .config of what's currently in /usr/src/linux: https://pastebin.com/SExLFvW8 |
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pietinger
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| Posted: Tue Sep 17, 2024 9:42 pm Post subject: |
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What happens if you disable CONFIG_SYSFB_SIMPLEFB=y ?
(this is NOT Simple framebuffer support (CONFIG_FB_SIMPLE); this is also NOT Simple framebuffer driver (CONFIG_DRM_SIMPLEDRM); it is the option in DeviceDriver->FirmwareDrivers->Mark VGA/VBE/EFI FB as generic system framebuffer; I recommend to keep all 3 disabled)
(Yes, the trick to enable i915 as module to get DRM_DISPLAY_HELPER [=y] && DRM_KMS_HELPER [=y] is well known and you should keep it.)
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Armand Karlsen
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Location: London, UK
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| Posted: Wed Sep 18, 2024 5:42 pm Post subject: |
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| pietinger wrote: | What happens if you disable CONFIG_SYSFB_SIMPLEFB=y ?
(this is NOT Simple framebuffer support (CONFIG_FB_SIMPLE); this is also NOT Simple framebuffer driver (CONFIG_DRM_SIMPLEDRM); it is the option in DeviceDriver->FirmwareDrivers->Mark VGA/VBE/EFI FB as generic system framebuffer; I recommend to keep all 3 disabled)
(Yes, the trick to enable i915 as module to get DRM_DISPLAY_HELPER [=y] && DRM_KMS_HELPER [=y] is well known and you should keep it.) |
I tried disabling CONFIG_SYSFB_SIMPLEFB, compile and boot on that, but sadly no luck  Xorg still fails with no screens, "nvidia" module won't load, and the dmesg error "nvidia: Unknown symbol drm_gem_object_free (err -2)" is still there |
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