On Thu, Jun 15, 2017 at 10:12 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Thu, 15 Jun 2017, Kai-Heng Feng wrote: > >> On Wed, Jun 14, 2017 at 1:28 AM, Bjorn Helgaas <helgaas@xxxxxxxxxx> wrote: >> > >> > The lspci output [1] shows: >> > >> > 00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 39) (prog-if 20 [EHCI]) >> > Capabilities: [c0] Power Management version 2 >> > Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+) >> > Status: D3 NoSoftRst- PME-Enable+ DSel=0 DScale=0 PME- >> > Bridge: PM- B3+ >> > >> > The device claims it can assert PME# from D3hot. If it can't, that >> > sounds like a hardware defect that should be addressed with a quirk. >> > Ideally we would also have a pointer to the AMD hardware erratum. >> >> Looks like it's pretty similar to "23 USB Wake on Connect/Disconnect >> with Low Speed Devices" in [1]. >> It points to a workaround in appendix A2 from [2]. >> However it says this bug only effects Low Speed devices, but it >> actually also happens on High Speed devices. >> >> [1] https://support.amd.com/TechDocs/46837.pdf >> [2] https://support.amd.com/TechDocs/42413.pdf > > Those documents refer to a hardware bug with a workaround in the BIOS. > Have you checked to see if your BIOS is up to date? Yes, it's up to date. > > Alan Stern >
