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This is a followup to this other thread: USB ports not working all of a sudden

I'm working on an Acer Aspire E 15, with the OS being Ubuntu Studio 14.04.

I noticed that the last kernel version:

Linux version 3.13.0-63-lowlatency (buildd@lgw01-18) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #103-Ubuntu SMP PREEMPT Fri Aug 14 22:23:32 UTC 2015

This one is giving certain issues to my computer (USB ports don't work). The last kernel version that always works is this one: 

Linux version 3.13.0-61-generic (buildd@lgw01-50) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #100-Ubuntu SMP Wed Jul 29 11:21:34 UTC 2015

I guess there is a sort of incompatibility with Acer Aspire E 15 computers, and I'd like to report this problem because of course I hope that the next kernel versions to be released will solve it. Also, I'm worried about what could happen in case this kernel version (3.13.0-61, the last working one) gets purged being old, maybe via and accidental autoremove.

I checked this other thread: How to report a bug on a different issue?. It suggests that I should use ubuntu-bug, but I don't know what option to click on to report this kind of issue.

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il mietitore
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  • Kernel bugs need to be reported to https://bugzilla.kernel.org/ BUT this question is not about Ubuntu so "ubuntu-bug" would be inapproprate (making this question also off topic ;) ) Better place to ask would be http://unix.stackexchange.com/ – Rinzwind Sep 13 '15 at 17:11
  • I thought the kernel was part of the Ubuntu system, that's why – il mietitore Sep 13 '15 at 17:17
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    @Rinzwind why is the procedure how to report a bug against an Ubuntu kernel off topic? – guntbert Sep 13 '15 at 17:54

2 Answers2

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  • Are you sure 3.13.0-63-generic is not working?

    You have tried 3.13.0-63-lowlatency (-lowlatency) which is different then -generic

  • Please,read this Filing Kernel Bug reports (Ubuntu Wiki).

    The submitter should provide as much information as possible in the bug description:

    1. The majority of kernel bug are hardware specific so be sure to note what hardware/device is being used.
    2. Document any known steps to reproduce the bug.
    3. Also note whether the bug exists in previous kernel versions of Ubuntu or if it's a regression from previous kernel versions.
    4. Finally, it's critical to also make sure to test the latest development Ubuntu kernel version as well as the latest upstream mainline kernel.

    Before trying last upstream one, try linux-generic-lts-vivid which is from Ubuntu 15.04 (last release). It's already in Trusty repository:

    sudo apt-get install linux-generic-lts-vivid
user.dz
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    I tried both generic and lowlatency kernels, and I see that there is no difference for what concerns this issue: the kernel will or won't work wether it is generic or lowlatency, with no difference. Also, I tried linux-generic-lts-vivid, which if I start will give me a mesmerizing grey screen in which I see waves that gradually fill the entire screen in a unique bright grey pattern. Of course I already uninstalled it. I'll now follow those information you indicated to try the upstream kernel, and then to report the issue. – il mietitore Sep 17 '15 at 13:54
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To solve this issue I upgraded to Ubuntu Studio 15.04. Once done the upgrade, I didn't have this issue anymore.

il mietitore
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