This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1948446 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete -- 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/1948446 Title: failure is observed in remapping BARs 20.04 Status in linux package in Ubuntu: Incomplete Bug description: In Ubuntu, CONFIG_PCI_REALLOC_ENABLE_AUTO config option is enabled by default. As a result, OS tries to remap BAR addresses and a failure is observed in remapping BARs. The issue is observed only when the SRIOV flag is disabled in BIOS. The issue can be worked by disabling BAR remapping bypassing “pci=realloc=off” kernel parameter. It has been tested with positive results. Dmesg also shows the following messages indicating that the setting up of standard BAR registers for the GPGPUs has failed. Jun 21 06:14:47 R750XAS kernel: [ 70.384361] pci 0000:17:00.0: BAR 1: no space for [mem size 0x2000000000 64bit pref] Jun 21 06:14:47 R750XAS kernel: [ 70.476810] pci 0000:17:00.0: BAR 1: failed to assign [mem size 0x2000000000 64bit pref] Jun 21 06:14:47 R750XAS kernel: [ 71.041877] pci 0000:17:00.0: BAR 0: no space for [mem size 0x01000000] Jun 21 06:14:47 R750XAS kernel: [ 71.120838] pci 0000:17:00.0: BAR 0: failed to assign [mem size 0x01000000] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1948446/+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