The issue didn't start happening after an upgrade; in fact it happens
when I newly installed the system. I thought a few kernel updates will
heal itself, but it didn't so I decided to report.
Ok, I will test the upstream kernel using linux-
image-3.19.0-031900rc6-generic_3.19.0-031900rc6.201
apport information
** Attachment added: "RfKill.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308615/+files/RfKill.txt
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apport information
** Attachment added: "Lsusb.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308609/+files/Lsusb.txt
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apport information
** Attachment added: "Card1.Codecs.codec.0.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308605/+files/Card1.Codecs.codec.0.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308613/+files/ProcModules.txt
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apport information
** Attachment added: "IwConfig.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308607/+files/IwConfig.txt
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apport information
** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308614/+files/PulseList.txt
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apport information
** Attachment added: "PciMultimedia.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308610/+files/PciMultimedia.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308616/+files/UdevDb.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308611/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "Card1.Amixer.values.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308604/+files/Card1.Amixer.values.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308608/+files/Lspci.txt
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** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308612/+files/ProcInterrupts.txt
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apport information
** Attachment added: "BootDmesg.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308601/+files/BootDmesg.txt
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apport information
** Attachment added: "Card0.Codecs.codec.0.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308603/+files/Card0.Codecs.codec.0.txt
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apport information
** Attachment added: "UdevLog.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308617/+files/UdevLog.txt
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apport information
** Attachment added: "AlsaDevices.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308599/+files/AlsaDevices.txt
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** Attachment added: "Card0.Amixer.values.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308602/+files/Card0.Amixer.values.txt
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** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308606/+files/CurrentDmesg.txt
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** Attachment added: "AplayDevices.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308600/+files/AplayDevices.txt
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** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1416238/+attachment/4308618/+files/WifiSyslog.txt
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Oops, my mistake, I forgotten to take a copy of the related dmesg log, and I
rebooted. Some lines that are worth looking at, are these lines:
Jan 29 19:37:18 tyf-S551LN kernel: [24979.506831] usb usb2: root hub lost power
or was reset
Jan 29 19:37:18 tyf-S551LN kernel: [24979.506833] usb usb3:
apport information
** Tags added: apport-collected staging
** Description changed:
I am using a laptop and all the USB ports will suddenly stop working
especially when the laptop has been put to sleep and then resumed again
(however the probability is very rare) . USB mouse, keyboard, flas
** Attachment added: "version.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1416238/+attachment/4308592/+files/version.log
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Public bug reported:
I am using a laptop and all the USB ports will suddenly stop working
especially when the laptop has been put to sleep and then resumed again
(however the probability is very rare) . USB mouse, keyboard, flash
drives will not be detected when plugged into any of the USB ports.
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