Re: No console anymore. How to figure this out.

On 24/03/2026 22.25, Dale wrote:
> On 3/24/26 4:16 PM, J.O. Aho wrote:
>> On 24/03/2026 21.43, Dale wrote:
>>>
>>> Still no console.  When I switched, monitors went into standby and 
>>> then switched off a few seconds later.
>>>
>>> This is the options for the kernel right now.
>>>
>>> root@Gentoo-1 / # cat /proc/cmdline
>>> BOOT_IMAGE=/kernel-6.12.31-3 
>>> root=PARTUUID=2c0f8a80-823d-4eb2-938d-364e6aeb51da ro video=efifb:on 
>>> nvidia_drm.modeset=1 nvidia-drm.fbdev=1 ibt=off
>>> root@Gentoo-1 / #
>>>
>>> That look right?  Any other ideas?  Do I need to get my sledge hammer???
>>
>> It looks right, was reading the old forums post about this, so I have 
>> to ask a stupid question, as I got a bit lazy after gone trough like 
>> 20 posts in this thread, did you have CONFIG_FB_EFI=y ? seems to be 
>> the requirement
>>
>> https://forums.gentoo.org/viewtopic-t-1174634.html
>>
>> I haven't thought too much about kernel options, as been running with 
>> the pre-compiled kernel.
> 
> It appears so.
> 
> [*]   EFI-based Framebuffer Support
> 
> Or
> 
> root@Gentoo-1 / # cat /usr/src/linux/.config | grep CONFIG_FB_EFI
> CONFIG_FB_EFI=y
> root@Gentoo-1 / #

Hmm...

And I guess CONFIG_DRM_FBDEV_EMULATION is set too, as otherwise you 
would get the following text while compiling the driver

        "CONFIG_DRM_FBDEV_EMULATION: is not set but is needed for
         nvidia-drm.fbdev=1 support (see /etc/modprobe.d/nvidia.conf), may
         result in a blank console/tty."

There seems to be some things in the ebuild at the end, which I have 
missed and differs from my desktop distro

         if ver_replacing -lt 590; then
                 elog "590 has changes that may or may not need attention:"
                 elog "1. support for Pascal, Maxwell, and Volta cards 
has been dropped"
                 elog "  (if affected, there should be a another message 
about this above)"
                 elog "2. nvidia-drm.modeset=1 is now default regardless 
of USE=wayland"
                 elog "3. nvidia-drm.fbdev=1 is now also tentatively 
default to match upstream"
                 elog "(2+3 were also later changed in >=580.126.09-r1, 
may already be in-use)"
                 elog "See /etc/modprobe.d/nvidia.conf to modify 
settings if needed,"
                 elog "fbdev=1 *could* cause issues for the console 
display with some setups."
         fi

         if ver_replacing -lt 595; then
                 elog "595 has changes that may or may not need attention:"
                 elog "1. USE=kernel-open was removed and is now always 
enabled. If for some"
                 elog "   reason you really need the closed variant 
(e.g. Runtime D3 on Turing"
                 elog "   GPUs), please use LTS 580.xx instead as Gentoo 
has no intention to"
                 elog "   support both variants anymore going forward"
                 elog "2. systemd/elogind sleep services 
(nvidia-sleep.sh) were tentatively"
                 elog "   removed and replaced by setting 
NVreg_UseKernelSuspendNotifiers=1 in"
                 elog "  /etc/modprobe.d/nvidia.conf. If using a 
non-default custom"
                 elog "   nvidia.conf, please ensure the option is set. 
Also, systemd users"
                 elog "   may want to ensure that they do not have old 
sleep/suspend/resume"
                 elog "   *nvidia* files in /etc/systemd to avoid 
potential issues."
                 elog "3. nvidia-drm.modeset=1 was removed from 
nvidia.conf because it is now"
                 elog "   default enabled regardless (new NVIDIA default)"

Another question that I got, nvidia kernel is included in your 
initramfs? (I'm not that good at what and how modules are selected for 
initramfs, as it's years since I configured that part and never touched 
it since then).

> At this point, I'm wondering where I put my sledge hammer.  I think it 
> is just inside my shop door.  :/  It's easy to find.  It has bright 
> orange wrapping to protect the handle and make it easier to find in the 
> grass or leaves.  o_O

One option would be to downgrade the driver, but then you also have 
limits like
nvidia-drivers-570.211.01.ebuild:MODULES_KERNEL_MAX=6.18
and of course graphics card support limits too...

-- 
  //Aho