I bought a PCI Express USB 3.0 card to overcome the above... invain. It performed better, in the sense that the xHCI host controller gets less often unresponsive and that it just works with iommu enabled in the BIOS as all the other USB did.
However, I STILL get a reproducible freeze up: [ 5964.638609] xhci_hcd 0000:08:00.0: xHCI host not responding to stop endpoint command. [ 5964.639671] xhci_hcd 0000:08:00.0: xHCI host controller not responding, assume dead [ 5964.639679] xhci_hcd 0000:08:00.0: HC died; cleaning up I compiled kernel 5.6-rc7 with xhci_pci and xhci_hcd as modules. This allows me to cover without rebooting: rmmod xhci_pci xhci_hcd followed by a modprobe xhci_pci recovers functionality. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1313279 Title: xHCI host not responding to stop endpoint command Status in Linux: Unknown Status in linux package in Ubuntu: Confirmed Bug description: Description: Ubuntu 14.04 LTS Release: 14.04 Hardware: Intel NUC D34010WYK (Core i3 4010U) Memory: 4 gigabytes USD device: PCTV 292e DVB-T tuner I have 2 PCTV 292e DVB-T tuners connected to the system. When I start to use either of the tuner, the xHCI host crashes. Since I'm booting from an USB disk. If I only connect 1 of the tuners, the system works ok. It does not matter which one of the tuners I connect. [ 68.990396] xhci_hcd 0000:00:14.0: xHCI host not responding to stop endpoint command. [ 68.990402] xhci_hcd 0000:00:14.0: Assuming host is dying, halting host. Sometimes this also leads to this: [ 638.183002] IP: [<ffffffff815325dd>] usb_enable_link_state+0x2d/0x2f0 [ 638.183057] PGD 0 [ 638.183077] Oops: 0000 [#1] SMP I can also observe the same fault with OpenELEC Linux distribution that runs kernel 3.14 when I run the system from an internal SATA SSD drive (not from an external USB disk). lsusb -v: http://paste.ubuntu.com/7343384/ dmesg: http://sprunge.us/HMXH dmesg (crash type 2): http://sprunge.us/PSiX ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: lubuntu-desktop 0.55 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 Date: Sun Apr 27 11:12:22 2014 InstallationDate: Installed on 2014-04-07 (19 days ago) InstallationMedia: Lubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) SourcePackage: lubuntu-meta UpgradeStatus: Upgraded to trusty on 2014-04-26 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1313279/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
