I verified my guess through providing a kernel parameter at startup xhci-hcd.quirks=0x00020000
where the bit set is along xhci.h: #define XHCI_SLOW_SUSPEND BIT_ULL(17) This quirk provide nearly the same as the patch mentioned in #5. With kernel 5.3.0-28 and this parameter set the machine suspended without complaining :-) Unfortunately it did not resume :-( With kernel 5.0.0-37 and this parameter set the machine suspended and resumed without complaining. Since I misused the kernel parameter this maybe a side effect. If not it is a previously covered bug. This will be a new game. Again: If there is a kernel available with the patch applied I'm willing to test the patch. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1851054 Title: suspend fails - previous kernel works To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe/+bug/1851054/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
