Re: [REGRESSION] usb controller fails to initialize on intel s1200btl
"Rafael J. Wysocki (Intel)" <[email protected]> Thu, 30 Jul 2026 15:55:14 +0200
| Newsgroups | gmane.linux.acpi.devel,gmane.linux.usb.general |
|---|---|
| Message-ID | <CAJZ5v0h1kqDEBYk0k05rv6f2SJ7g+TN4FhBDJYZSVUctu-0FdA@mail.gmail.com> |
On Thu, Jul 30, 2026 at 3:25 PM Julian Silver <[email protected]> wrote: > > #regzbot introduced: c0f691388992c708436ab5f6e810865be6ddf5c6 > > Hello, > > After commit c0f69138, all usb ports on the rear panel stop working. The kernel logs show: "probe with driver ehci-pci failed with error -110". Specifying "intel_idle.max_cstate=0" can work around this issue. > > Please let me know if you need any additional info or trying patches. So you get a timeout during ehci-pci probe if the intel_idle driver initializes before it. Apparently, CPU idle states get in the way of HW probing. Does adding "intel_idle.max_cstate=1" to the kernel command line also help, by any chance?