This morning, I got prompted to do a software update which I allowed to proceed.
Then my sound stopped working.
I had just recently deleted all older kernels so couldn't roll back. I used an app called "ukuu" to get back an older kernel and now my sound works.
The kernel that didn't work is linux-image-4.13.0-36-generic
The one I rolled back to that does work is linux-image-4.12.14-041214-generic
Anyone else run into this? Did I do the right thing?
ALso, this site (https://wiki.ubuntu.com/Kernel/RollingLTSEnablementStack) makes it seem that a kernel update might have happened here.
Can anyone shed any light here? I had been updating the system regularly with no problems and this is the first time encountering this issue.
NRaygun 2018-02-27 23:37:51Z
如果唯一的区别是内核的更改，那么请向“Linux”包中提交错误报告。 user535733 2018-02-28 02:16:26Z, License: CC BY-SA 3.0
不完全确定如何做到这一点 - 你能把我指向某个地方，了解如何提交这样的错误报告吗？ NRaygun 2018-02-28 03:04:07Z, License: CC BY-SA 3.0
哦......错误报告需要非常确定和完全正确。开发人员没有无限制的时间来做基本的故障排除，所以他们没有。预计Ubuntu参与者（如您和我）将学习基本的故障排除和正确的报告技巧。改进Linux内核等开源软件。使用“搜索”功能提出问题，如“我如何排除<我的问题=”“>”或“我如何报告此错误”。</ my> user535733 2018-02-28 03:42:25Z, License: CC BY-SA 3.0
看 Zanna 2018-02-28 17:03:58Z, License: CC BY-SA 3.0
知道了！我按照步骤3结束时的说明，它工作。我猜Alsa驱动程序需要在内核更新后更新。 NRaygun 2018-03-01 01:16:54Z, License: CC BY-SA 3.0
If the only difference is a change of kernels, then please file a bug report against the 'linux' package user535733 2018-02-28 02:16:26Z, License: CC BY-SA 3.0
Not exactly sure how to do that - can you point me to somewhere to learn how to file such a bug report? NRaygun 2018-02-28 03:04:07Z, License: CC BY-SA 3.0
Oh...bug reports need to be pretty certain and exact about the problem. Developers do not have unlimited time to do basic troubleshooting, so they don't. Ubuntu participants (like you and me) are expected to learn the basic troubleshooting and proper reporting skills. to improve Open Source software like the Linux Kernel. Use the 'Search' feature to ask questions like 'how do I troubleshoot <my problem>' or 'how do I report this bug' user535733 2018-02-28 03:42:25Z, License: CC BY-SA 3.0
see Zanna 2018-02-28 17:03:58Z, License: CC BY-SA 3.0
Got it! I followed the instructions at the end of Step 3 here and it worked. I guess the Alsa drivers needed an update after the kernel update NRaygun 2018-03-01 01:16:54Z, License: CC BY-SA 3.0