Public bug reported: An issue has come up with MI300 OEM deployments where, due to the current limit of 64 drm device nodes in the kernel, MI300 systems with an integrated display (e.g., mgag200 or ast) fail to light up the console because the AMD GPU driver has used up all of the drm device nodes. A patch set recently landed in drm-misc to extend the number of device nodes. These are the relevant commits:
* https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=5fbca8b48b3050ae7fb611a8b09af60012ed6de1 ("drm: Use XArray instead of IDR for minors") * https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=45c4d994b82b08f0ce5eb50f8da29379c92a391e ("accel: Use XArray instead of IDR for minors") * https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=071d583e01c88272f6ff216d4f867f8f35e94d7d ("drm: Expand max DRM device number to full MINORBITS") ** Affects: hwe-next Importance: Undecided Status: New ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Tags: amd oem-priority originate-from-2078282 ** Tags added: amd oem-priority originate-from-2078282 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2078773 Title: Unable to use AMD Instinct MI300 with integrated display Status in HWE Next: New Status in linux package in Ubuntu: Incomplete Bug description: An issue has come up with MI300 OEM deployments where, due to the current limit of 64 drm device nodes in the kernel, MI300 systems with an integrated display (e.g., mgag200 or ast) fail to light up the console because the AMD GPU driver has used up all of the drm device nodes. A patch set recently landed in drm-misc to extend the number of device nodes. These are the relevant commits: * https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=5fbca8b48b3050ae7fb611a8b09af60012ed6de1 ("drm: Use XArray instead of IDR for minors") * https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=45c4d994b82b08f0ce5eb50f8da29379c92a391e ("accel: Use XArray instead of IDR for minors") * https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=071d583e01c88272f6ff216d4f867f8f35e94d7d ("drm: Expand max DRM device number to full MINORBITS") To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/2078773/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
