** Tags added: cscc -- 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/1710548
Title: Renesas / NEC - µPD720202 needs XHCI_TRUST_TX_LENGTH quirk? Logitech C920 Webcam/Zoneminder/Startech Status in linux package in Ubuntu: Confirmed Bug description: Building zoneminder server. I think I stumbled on a kernel bug. The suggestion is that the popular Renesas / NEC - µPD720202 may need "quirk" in the kernel. Wiped the drive. Loaded 17.04 Server Now getting 100's of messages in DMESG complaining of thousands of errors: [96415.044917] handle_tx_event: 516 callbacks suppressed [96415.044924] xhci_hcd 0000:0c:00.0: WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk? Messages suggest "quirk" is the solution. a)Researched usb 3.0 "quirk' b)Discovered it's really a "thing" c)Couldn't find recipe for patching kernel for NEC/Renasas "quirk" fix. [EDIT]: Note C920 webcam is USB 2.0. Note DMESG errors disappear when cam is plug into motherboard USB 2.0 ports. Anecdotes suggest Nec/Renasas firmware is to blame. a) Kernel indicates 2024 firmaware b) Startech website has 2026 firmware. c) SIDEBAR: WindowCentric GUI instructions do not translate between ASCII and HEX. So if your Startech is on channels 9, 10, 11, and 12 from perspective of Windows, you must translate into 09, 0A, 0B, and 0C when editing runfile for effective firmware update of all 4 controllers. Yes, for the 4 channel controller, count them: 4 update iterations. d) Firmware updated. Rebooted with new Startech/Nec/Renases 2026 firmware. SAME OLD PLETHORA OF ERRORS I give up. It may well be worth noting that there are no errors from DMESG until some seconds after the first webcam is attached to the Startech, while zoneminder is running. I think the file attached represents DMESG immediately before the errors start going nuts. My theory is that ZM does lazy polls on missing cams but once it gets a hold of the cam and sucking data the quirk bug surfaces. ProblemType: Bug DistroRelease: Ubuntu 17.04,17.10,18.04 Package: linux-image-4.10.0-32-generic 4.10.0-32.36 also in 4.13 and 4.15 ProcVersionSignature: Ubuntu 4.10.0-32.36-generic 4.10.17 Uname: Linux 4.10.0-32-generic x86_64 ApportVersion: 2.20.4-0ubuntu4.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jeff 12776 F.... pulseaudio /dev/snd/controlC3: jeff 12776 F.... pulseaudio /dev/snd/controlC2: jeff 12776 F.... pulseaudio /dev/snd/controlC1: jeff 12776 F.... pulseaudio Date: Sun Aug 13 16:48:41 2017 MachineType: Supermicro X9SRE/X9SRE-3F/X9SRi/X9SRi-3F ProcEnviron: LANGUAGE=en_US TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 mgadrmfb 1 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-32-generic root=UUID=4f802241-4254-4d61-9231-d7e16de36a3d ro quiet splash vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.10.0-32-generic N/A linux-backports-modules-4.10.0-32-generic N/A linux-firmware 1.164.1 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/31/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3.2a dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: X9SRE/X9SRE-3F/X9SRi/X9SRi-3F dmi.board.vendor: Supermicro dmi.board.version: 0123456789 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 17 dmi.chassis.vendor: Supermicro dmi.chassis.version: 0123456789 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3.2a:bd08/31/2015:svnSupermicro:pnX9SRE/X9SRE-3F/X9SRi/X9SRi-3F:pvr0123456789:rvnSupermicro:rnX9SRE/X9SRE-3F/X9SRi/X9SRi-3F:rvr0123456789:cvnSupermicro:ct17:cvr0123456789: dmi.product.name: X9SRE/X9SRE-3F/X9SRi/X9SRi-3F dmi.product.version: 0123456789 dmi.sys.vendor: Supermicro To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1710548/+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
