Would it be possible for you to do a kernel bisection? First, find the last good -rc kernel and the first bad -rc kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/
Then, $ sudo apt build-dep linux $ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git $ cd linux $ git bisect start $ git bisect good $(the good version you found) $ git bisect bad $(the bad version found) $ make localmodconfig $ make -j`nproc` deb-pkg Install the newly built kernel, then reboot with it. If the issue still happens, $ git bisect bad Otherwise, $ git bisect good Repeat to "make -j`nproc` deb-pkg" until you find the commit that causes the regression. -- 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/1832963 Title: sound doesn't work Status in linux package in Ubuntu: Confirmed Bug description: after installing new kernel RV770 HDMI Audio [Radeon HD 4850/4870](Radeon 4850 512MB GODR3 PCI-E Dual Slot Fansin..... reported as Disabled and off in sound preferences->hardware --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bmike1 1895 F.... pulseaudio /dev/snd/controlC2: bmike1 1895 F.... pulseaudio /dev/snd/controlC1: bmike1 1895 F.... pulseaudio CurrentDesktop: MATE DistroRelease: Linux Mint 19.1 InstallationDate: Installed on 2019-01-15 (151 days ago) InstallationMedia: Linux Mint 19.1 "Tessa" - Release amd64 20181217 MachineType: Gigabyte Technology Co., Ltd. GA-MA785G-UD3H Package: linux (not installed) ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-16-generic root=UUID=6298f990-6b80-4665-80ab-e83034a72ae5 ro quiet splash crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=512M-:192M vt.handoff=1 ProcVersionSignature: Ubuntu 5.0.0-16.17~18.04.1-generic 5.0.8 RelatedPackageVersions: linux-restricted-modules-5.0.0-16-generic N/A linux-backports-modules-5.0.0-16-generic N/A linux-firmware 1.173.6 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: tessa Uname: Linux 5.0.0-16-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 09/16/2009 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F4 dmi.board.name: GA-MA785G-UD3H dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF4:bd09/16/2009:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA785G-UD3H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA785G-UD3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: GA-MA785G-UD3H dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1832963/+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
