Re: [gentoo-user] nvidia driver missing symbols

[Daniel Frey]

On 01/05/2017 05:31 PM, Corbin Bird wrote:
>
> On 01/05/2017 09:54 AM, Daniel Frey wrote:
>> On 01/05/2017 06:12 AM, Corbin Bird wrote:
>>> On 01/04/2017 10:52 PM, Daniel Frey wrote:
>>>> So I updated my nvidia driver and got the following:
>>>>
>>>> [   75.557567] nvidia-nvlink: Nvlink Core is being initialized, major
>>>> device number 247
>>>> [   75.557583] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  375.26
>>>> Thu Dec  8 18:36:43 PST 2016 (using threaded interrupts)
>>>> [   75.701289] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver
>>>> for UNIX platforms  375.26  Thu Dec  8 18:04:14 PST 2016
>>>> [   75.769472] nvidia_drm: Unknown symbol
>>>> drm_atomic_helper_plane_destroy_state (err 0)
>>>> [   75.769479] nvidia_drm: Unknown symbol drm_kms_helper_poll_fini (err 0)
>>>> [   75.769491] nvidia_drm: Unknown symbol drm_kms_helper_poll_disable
>>>> (err 0)
>>>> [   75.769497] nvidia_drm: Unknown symbol drm_kms_helper_poll_init (err 0)
>>>> [   75.769514] nvidia_drm: Unknown symbol
>>>> drm_atomic_helper_disable_plane (err 0)
>>>> [   75.769527] nvidia_drm: Unknown symbol
>>>> drm_atomic_helper_cleanup_planes (err 0)
>>>> [   75.769531] nvidia_drm: Unknown symbol drm_helper_hpd_irq_event (err 0)
>>>> [   75.769538] nvidia_drm: Unknown symbol
>>>> drm_atomic_helper_crtc_destroy_state (err 0)
>>>> [   75.769565] nvidia_drm: Unknown symbol drm_atomic_helper_check (err 0)
>>>> [   75.769567] nvidia_drm: Unknown symbol
>>>> drm_atomic_helper_connector_destroy_state (err 0)
>>>> [   75.769573] nvidia_drm: Unknown symbol
>>>> drm_atomic_helper_plane_duplicate_state (err 0)
>>>> [   75.769603] nvidia_drm: Unknown symbol drm_atomic_helper_plane_reset
>>>> (err 0)
>>>> [   75.769606] nvidia_drm: Unknown symbol
>>>> drm_atomic_helper_prepare_planes (err 0)
>>>> [   75.769610] nvidia_drm: Unknown symbol drm_helper_mode_fill_fb_struct
>>>> (err 0)
>>>> [   75.769622] nvidia_drm: Unknown symbol drm_atomic_helper_set_config
>>>> (err 0)
>>>> [   75.769624] nvidia_drm: Unknown symbol
>>>> drm_atomic_helper_connector_duplicate_state (err 0)
>>>> [   75.769630] nvidia_drm: Unknown symbol drm_atomic_helper_crtc_reset
>>>> (err 0)
>>>> [   75.769636] nvidia_drm: Unknown symbol drm_kms_helper_hotplug_event
>>>> (err 0)
>>>> [   75.769644] nvidia_drm: Unknown symbol drm_atomic_helper_swap_state
>>>> (err 0)
>>>> [   75.769646] nvidia_drm: Unknown symbol drm_atomic_helper_page_flip
>>>> (err 0)
>>>> [   75.769648] nvidia_drm: Unknown symbol
>>>> drm_atomic_helper_connector_reset (err 0)
>>>> [   75.769653] nvidia_drm: Unknown symbol
>>>> drm_atomic_helper_crtc_duplicate_state (err 0)
>>>> [   75.769656] nvidia_drm: Unknown symbol drm_atomic_helper_update_plane
>>>> (err 0)
>>>>
>>>> I've traced this to needing KMS helper support in the kernel.
>>>>
>>>> For the life of me, I can't find it to enable it. When searching the
>>>> kernel, it shows up but doesn't say exactly where it is.
>>>>
>>>> Surely someone else has run across this and has a way to enable:
>>>>
>>>> CONFIG_DRM_KMS_HELPER
>>>> CONFIG_DRM_KMS_FB_HELPER
>>>> CONFIG_DRM_FBDEV_EMULATION
>>>>
>>>> ??
>>>>
>>>> I am thinking it needs something as a prerequisite but I can't grok that
>>>> line in the kernel.
>>>>
>>>> Dan
>>>>
>>> More info, please.
>>>
>>> Question #1 : is this a (U)EFI based system?
>> No, it's an old BIOS based system.
>>
>>> Question #2 : which FB(s) are enabled?
>>>
>> I just looked, the EFI-based one is the only one selected. nvidia
>> doesn't like the nvidia framebuffer, so I had to deselect it.
>>
>> Dan
>>
>
> Link : https://wiki.gentoo.org/wiki/NVidia/nvidia-drivers
>
> Quotes from the Wiki :
>> Be warned that enabling /efifb/ support in kernel (|CONFIG_FB_EFI=y|)
>> causes intermittent problems with the initialization of the NVIDIA
>> drivers.
>> Device Drivers --->
>>     Graphics support --->
>>         Frame buffer Devices --->
>>             <*> Support for frame buffer devices --->
>>             < >   nVidia Framebuffer Support
>>             < >   nVidia Riva support
>> Device drivers --->
>>     Graphics support --->
>>         < > Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
>
> The standard "old" VESA VGA not enabled?

No, I don't think I ever had it enabled. We're talking years (maybe even
more than a decade) here. I probably turned all that off when installing
the Nvidia drivers for the first time.

>
> You have a BIOS based system. You might want to enable it and recompile.
> If memory is correct ... the console and X terminals need it ( or the
> EFI variant  for UEFI based systems ).
>
> It should not interfere with the nvidia drivers.
>
> Look for this option as well :
>> Bus options (PCI etc.)  --->
>> [*] Mark VGA/VBE/EFI FB as generic system framebuffer
>
> Nvidia has really changed since my last Nvidia based card.
>
>

I think I fixed it by accident. I couldn't find the KMS helpers to
enable for an external module in the kernel, so I built the Intel driver
with KMS support and it dragged in the KMS helper bits (confirmed by
grepping .config). Why can't we just turn that option on directly in
menuconfig for external modules? This is in gentoo-sources.

I've rebooted and the problem has gone away, go figure.

Dan