Hi Sarah, On 01/03/2014 02:03 AM, Sarah Sharp wrote: > Denis, do all of Compulab's Haswell systems reboot on shutdown? Are > they all running a Phoenix BIOS? Can you send me the output of `sudo > lspci -vvv -s` for the xHCI host? oem@oem-Intense-PC2 ~ $ sudo lspci -vvv -s 00:14.0 00:14.0 USB controller: Intel Corporation Lynx Point-LP USB xHCI HC (rev 04) (prog-if 30 [XHCI]) Subsystem: Intel Corporation Device 7270 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 59 Region 0: Memory at f0620000 (64-bit, non-prefetchable) [size=64K] Capabilities: [70] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0-,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME- Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+ Address: 00000000fee0200c Data: 41b1 Kernel driver in use: xhci_hcd > Basically, I'm trying to find a common variable to key off. I suspect > BIOS vendor is probably the right thing, instead of system vendor. By the way the quirk introduced by commit e95829f474f0db3a4d940cae1423783edd966027 "xhci: Switch PPT ports to EHCI on shutdown." works for Lynx Point as well at least on Intense-PC2. I mean we can add XHCI_SPURIOUS_REBOOT flag that invokes usb_disable_xhci_ports(). May be this solution works for HP and other systems without side effects? Denis -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
