Chi-Thanh Christopher Nguyen, the next step is to fully commit bisect from kernel 3.15-rc1 to 3.15-rc2 in order to identify the last good kernel commit, followed immediately by the first bad one. This will allow for a more expedited analysis of the root cause of your issue. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ?
Please note, finding adjacent kernel versions is not fully commit bisecting. Also, the kernel release names are irrelevant for the purposes of bisecting. It is most helpful that after the fix commit (not kernel version) has been identified, you then mark this report Status Confirmed. Thank you for your help. ** Tags removed: kernel-bug-exists-upstream-3.15-rc2 kernel-bug-exists-upstream-4.9.0 ** Tags added: kernel-bug-exists-upstream-4.9 needs-bisect ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1651910 Title: radeon: black screen after upgrade from 14.04 to 16.04 on RS780 Status in Linux: Unknown Status in linux package in Ubuntu: Incomplete Bug description: After upgrading from Ubuntu 14.04 to 16.04, the screen will stay black after GRUB (backlight is on) when booting with the new 4.4 kernel (linux-image-4.4.0-57-generic). Monitor connected via DVI. WORKAROUND: Boot with the old 3.14 kernel. --- ApportVersion: 2.20.1-0ubuntu2.4 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D2', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p', '/dev/snd/controlC1', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: DistroRelease: Ubuntu 16.04 HibernationDevice: RESUME=UUID=dbcee44e-5c4b-4630-a837-f819f42e91eb IwConfig: lo no wireless extensions. eth0 no wireless extensions. MachineType: BIOSTAR Group A780L Package: linux (not installed) ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.8.0-32-generic root=UUID=da4d032c-4aef-42d0-bcf6-1cf98904be02 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.8.0-32.34~16.04.1-generic 4.8.11 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.8.0-32-generic N/A linux-backports-modules-4.8.0-32-generic N/A linux-firmware 1.157.6 RfKill: Tags: xenial Uname: Linux 4.8.0-32-generic x86_64 UpgradeStatus: Upgraded to xenial on 2016-09-24 (89 days ago) UserGroups: adm admin cdrom dialout lpadmin nopasswdlogin plugdev sambashare _MarkForUpload: True dmi.bios.date: 07/20/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 080014 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: A780L dmi.board.vendor: BIOSTAR Group dmi.chassis.asset.tag: None dmi.chassis.type: 3 dmi.chassis.vendor: BIOSTAR Group dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd07/20/2010:svnBIOSTARGroup:pnA780L:pvr:rvnBIOSTARGroup:rnA780L:rvr:cvnBIOSTARGroup:ct3:cvr: dmi.product.name: A780L dmi.sys.vendor: BIOSTAR Group To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1651910/+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