update killed my audio

[gp_centos]

your latest update killed my audio? How do I fix it or how do I revert back to previous version that worked?

[TrevorH]

What update when?

You do know that CentOS 6 has less than 2 months of life left and you need to be thinking (at the very least) about moving to a newer version?

[gp_centos]

OK TrevorH, just because there's only two months of support does not mean I cannot use it, is that correct? I should be able still to use it without the support, that's why I do not understand why there was an update! Was it to kill COS-6 and make me to move to a newer version? I just downloaded that one yesterday because the icon became active for new updates. Thank you.

[TrevorH]

You still didn't say what update. We have no idea what you put on... nor do we know what you had before you updated.

[gp_centos]

How would I find out what update I installed?
ID | Login user | Date and time | Action(s) | Altered
-------------------------------------------------------------------------------
15 | System <unset> | 2020-10-16 15:26 | E, I, U | 9 EE
14 | System <unset> | 2020-08-12 18:17 | E, I, U | 8 EE
13 | System <unset> | 2020-07-09 21:36 | Update | 1
12 | System <unset> | 2020-06-28 00:00 | E, I, U | 18 EE
11 | System <unset> | 2020-03-22 15:43 | Update | 2
10 | System <unset> | 2020-03-16 14:15 | E, I, U | 120 EE
9 | System <unset> | 2019-01-03 12:43 | I, U | 218 EE
8 | System <unset> | 2019-01-03 12:28 | Update | 8
7 | System <unset> | 2017-07-24 14:46 | I, U | 13
6 | System <unset> | 2017-07-03 18:51 | I, U | 41
5 | root <root> | 2017-04-07 11:33 | Install | 11
4 | root <root> | 2017-04-07 11:01 | Install | 3
3 | root <root> | 2017-04-06 09:28 | Install | 2
2 | root <root> | 2017-04-05 21:23 | I, O, U | 788 EE
1 | System <unset> | 2017-04-05 20:34 | Install | 1528
history list

[toracat]

There is a good chance that you were affected by a known sound issue with the latest firefox as reported here. If this is the case, a workaround is to downgrade firefox.

[tunk]

This should show the newest installed packages:
rpm -qa --last | more

[gp_centos]

I did yum undo 15 but no sound and who knows what else is messed up a result of that. Anyway, thank you guys for your help. I guess I will have to upgrade to centos8 now and try to figure out how set the screen like in centos6, is that actually possible? Thanks

[gp_centos]

I just ran the tunk's command and yes, it did modify firefox:
firefox-78.3.0-1.el6.centos.x86_64 Fri 16 Oct 2020 03:27:46 PM MDT
kernel-devel-2.6.32-754.33.1.el6.x86_64 Fri 16 Oct 2020 03:27:22 PM MDT
perf-2.6.32-754.33.1.el6.x86_64 Fri 16 Oct 2020 03:27:16 PM MDT
kernel-headers-2.6.32-754.33.1.el6.x86_64 Fri 16 Oct 2020 03:27:13 PM MDT
ca-certificates-2020.2.41-65.1.el6_10.noarch Fri 16 Oct 2020 03:27:12 PM MDT
kernel-2.6.32-754.33.1.el6.x86_64 Fri 16 Oct 2020 03:27:04 PM MDT
kernel-firmware-2.6.32-754.33.1.el6.noarch Fri 16 Oct 2020 03:26:59 PM MDT

Since I ran undo command all that might be messed up because it told me ti cannot find some of the docs anyway now.

[gp_centos]

here's the result:
Failed to upgrade: ca-certificates-2020.2.41-65.1.el6_10.noarch
Failed to upgrade: firefox-78.3.0-1.el6.centos.x86_64
Failed to upgrade: kernel-firmware-2.6.32-754.33.1.el6.noarch
Failed to upgrade: kernel-headers-2.6.32-754.33.1.el6.x86_64
Failed to upgrade: perf-2.6.32-754.33.1.el6.x86_64
Package kernel-2.6.32-754.33.1.el6.x86_64 already installed and latest version
Package kernel-devel-2.6.32-754.33.1.el6.x86_64 already installed and latest version
No package matched to remove: kernel-0:2.6.32-696.6.3.el6
No package matched to remove: kernel-devel-0:2.6.32-696.6.3.el6