apport information ** Tags added: apport-collected
** Description changed: Hello, I use ubuntu 16.04 with hwe stack and an Radeon R9 285. With kernel 4.13 and older, I can use a resolution of 2560x1440. But, since the upgrade to kernel 4.15, I'm limited to the 1920x1200. I have attached the output of xrandr on both kernel. My screen (Dell U2713HM) is plugged to the output DVI-1. With a kernel 4.13, the output is detected as a DVI-I. But with a kernel 4.15, the output is detected as a DVI-D. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.15.0-29-generic 4.15.0-29.31~16.04.1 ProcVersionSignature: Ubuntu 4.15.0-29.31~16.04.1-generic 4.15.18 Uname: Linux 4.15.0-29-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 CurrentDesktop: Unity Date: Sun Aug 5 16:46:32 2018 SourcePackage: linux-signed-hwe UpgradeStatus: Upgraded to xenial on 2016-12-17 (595 days ago) + --- + ApportVersion: 2.20.1-0ubuntu2.18 + Architecture: amd64 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC0: frederic 2366 F.... pulseaudio + /dev/snd/controlC1: frederic 2366 F.... pulseaudio + CurrentDesktop: Unity + DistroRelease: Ubuntu 16.04 + HibernationDevice: RESUME=/dev/mapper/Fred_SSD-Fred_Swap + IwConfig: + lo no wireless extensions. + + em1 no wireless extensions. + MachineType: ASUS All Series + Package: linux (not installed) + ProcFB: 0 amdgpudrmfb + ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-29-generic root=/dev/mapper/Fred_SSD-Fred_Root ro quiet + ProcVersionSignature: Ubuntu 4.15.0-29.31~16.04.1-generic 4.15.18 + RelatedPackageVersions: + linux-restricted-modules-4.15.0-29-generic N/A + linux-backports-modules-4.15.0-29-generic N/A + linux-firmware 1.157.20 + RfKill: + + Tags: xenial + Uname: Linux 4.15.0-29-generic x86_64 + UpgradeStatus: Upgraded to xenial on 2016-12-17 (596 days ago) + UserGroups: adm cdrom dip lp lpadmin plugdev sambashare scanner sudo video + _MarkForUpload: True + dmi.bios.date: 10/28/2015 + dmi.bios.vendor: American Megatrends Inc. + dmi.bios.version: 3003 + dmi.board.asset.tag: To be filled by O.E.M. + dmi.board.name: MAXIMUS VII RANGER + dmi.board.vendor: ASUSTeK COMPUTER INC. + dmi.board.version: Rev 1.xx + dmi.chassis.asset.tag: To Be Filled By O.E.M. + dmi.chassis.type: 3 + dmi.chassis.vendor: To Be Filled By O.E.M. + dmi.chassis.version: To Be Filled By O.E.M. + dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3003:bd10/28/2015:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnMAXIMUSVIIRANGER:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: + dmi.product.family: ASUS MB + dmi.product.name: All Series + dmi.product.version: System Version + dmi.sys.vendor: ASUS ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/1785481/+attachment/5172014/+files/AlsaInfo.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1785481 Title: amdgpu WQHD resolution(2560 × 1440) not available To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1785481/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
