Since migrating to ubuntu 17.10 I have had some issues with suspending my system (Dell XPS15 with nvidia / intel dual graphic card)
When I press the power button briefly or call systemctl suspend, I can see that the system tries to go in suspended mode but it comes back on after a few seconds. Extracts from the syslog below
[ 2968.230422] PM: Suspending system (mem) [ 2968.230485] Suspending console(s) (use no_console_suspend to debug) [ 2968.439210] xhci_hcd 0000:3e:00.0: WARN: xHC CMD_RUN timeout [ 2968.439222] suspend_common(): xhci_pci_suspend+0x0/0xd0 returns -110 [ 2968.439227] pci_pm_suspend(): hcd_pci_suspend+0x0/0x30 returns -110 [ 2968.439246] dpm_run_callback(): pci_pm_suspend+0x0/0x130 returns -110 [ 2968.439249] PM: Device 0000:3e:00.0 failed to suspend async: error -110 [ 2968.939220] thunderbolt 0000:08:00.0: Ignoring mailbox command error (-110) in icm_suspend [ 2968.939329] PM: Some devices failed to suspend, or early wake event detected [ 2968.939464] PM: resume of devices complete after 0.129 msecs [ 2989.664896] PM: Finishing wakeup. [ 2989.664899] OOM killer enabled. [ 2989.664900] Restarting tasks ... done.
And according to lspci
3e:00.0 USB controller: Intel Corporation DSL6340 USB 3.1 Controller [Alpine Ridge] (rev ff)
Running the stock Ubuntu kernel. No special tweak
Anybody facing the same issue with a way to resolve this ?