# BUG: 550.135 Still Broken with Kernel 6.11.X

**URL:** <https://forums.developer.nvidia.com/t/bug-550-135-still-broken-with-kernel-6-11-x/313996>\
**Category:** Linux\
**Tags:** nvbugs\
**Created:** [November 20, 2024, 2:49am UTC](https://forums.developer.nvidia.com/t/bug-550-135-still-broken-with-kernel-6-11-x/313996 "2024-11-20T02:49:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rgadsdon](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/rgadsdon/32/46712_2.png) [@rgadsdon](https://forums.developer.nvidia.com/u/rgadsdon)\
**Post date:** [November 20, 2024, 2:49am UTC](https://forums.developer.nvidia.com/t/bug-550-135-still-broken-with-kernel-6-11-x/313996/1 "2024-11-20T02:49:46Z")

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Tested with Kernel 6.11.6 ([kernel.org](http://kernel.org)):

`ld -r -o /home/rgadsdon/NVIDIA-Linux-x86_64-550.135/kernel/nvidia-modeset/nv-modeset-interface.o /home/rgadsdon/NVIDIA-Linux-x86_64-550.135/kernel/nvidia-modeset/nvidia-modeset-linux.o /home/rgadsdon/NVIDIA-Linux-x86_64-550.135/kernel/nvidia-modeset/nv-kthread-q.o
MODPOST /home/rgadsdon/NVIDIA-Linux-x86_64-550.135/kernel/Module.symvers
ERROR: modpost: “drm_fbdev_ttm_setup” [/home/rgadsdon/NVIDIA-Linux-x86_64-550.135/kernel/nvidia-drm.ko] undefined!
make[3]: *** [scripts/Makefile.modpost:145: /home/rgadsdon/NVIDIA-Linux-x86_64-550.135/kernel/Module.symvers] Error 1
make[2]: *** [/usr/src/linux-6.11.6/Makefile:1878: modpost] Error 2
make[1]: *** [Makefile:224: __sub-make] Error 2
make[1]: Leaving directory ‘/usr/src/linux-6.11.6’
make: *** [Makefile:115: modules] Error 2 `

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<div class="post-metadata">

**Author:** ![ionen](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/ionen/32/98214_2.png) [@ionen](https://forums.developer.nvidia.com/u/ionen)\
**Post date:** [November 20, 2024, 4:01am UTC](https://forums.developer.nvidia.com/t/bug-550-135-still-broken-with-kernel-6-11-x/313996/2 "2024-11-20T04:01:08Z")

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Is this a custom minimalist kernel?

CONFIG\_DRM\_TTM\_HELPER needs to be (newly) enabled for 6.11.x when CONFIG\_DRM\_FBDEV\_EMULATION is set.

Albeit you won’t be able to set that option directly due to how the kernel configs are setup and you need to enable another option that enables it, e.g. CONFIG\_DRM\_AMDGPU=m would enable it (even if not using amdgpu), likewise for DRM\_QXL=m, and DRM\_NOUVEAU=m – but DRM\_I915 doesn’t.

Haven’t tried 550.135 yet, but I can build 550.127.05 with 6.11.x just fine anyhow.