Olivier Caro, given you have the latest BIOS, we can continue to pursue it as a driver bug, and let an upstream developer make the call if there is nothing that can be done on the driver side.
Despite this, a couple of follow up questions: 1) If you remove the Radeon HD 6670 so you only have the R9 290 installed, does this change anything? 2) With just the R9 290 installed, does using fglrx provide a WORKAROUND following https://help.ubuntu.com/community/BinaryDriverHowto/AMD ? ** Description changed: The display connected on my R9 290 through DisplayPort connection turns black during boot and never comes back again. According to the power led, it is up and does not turn into power saving mode. According to xorg.0.log and System Settings / Display the display is perfectly detected. This display worked perfectly fine using the same DisplayPort cable, running the same driver on my Radeon HD 6670. - Description: Ubuntu 15.04 - Release: 15.04 - --- + I plugged the R9 290 into a Asus M2NPV-VM based PC running Ubuntu + 14.04.3 (3.13.0-63-generic). The same display connected on the same + displayport did work fine. + + --- ApportVersion: 2.17.2-0ubuntu1.5 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: olivier 2403 F.... pulseaudio - /dev/snd/controlC2: olivier 2403 F.... pulseaudio - /dev/snd/controlC1: olivier 2403 F.... pulseaudio - /dev/snd/seq: timidity 1672 F.... timidity + USER PID ACCESS COMMAND + /dev/snd/controlC0: olivier 2403 F.... pulseaudio + /dev/snd/controlC2: olivier 2403 F.... pulseaudio + /dev/snd/controlC1: olivier 2403 F.... pulseaudio + /dev/snd/seq: timidity 1672 F.... timidity DistroRelease: Ubuntu 15.04 EcryptfsInUse: Yes IwConfig: - eth0 no wireless extensions. - - lo no wireless extensions. + eth0 no wireless extensions. + + lo no wireless extensions. MachineType: To be filled by O.E.M. To be filled by O.E.M. Package: linux (not installed) ProcFB: - 0 radeondrmfb - 1 radeondrmfb + 0 radeondrmfb + 1 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic root=/dev/mapper/vg0-root ro radeon.auxch=0 init=/lib/systemd/systemd-bootchart ProcVersionSignature: Ubuntu 3.19.0-30.33-generic 3.19.8-ckt6 PulseList: - Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied - No PulseAudio daemon running, or not running as session daemon. + Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied + No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: - linux-restricted-modules-3.19.0-30-generic N/A - linux-backports-modules-3.19.0-30-generic N/A - linux-firmware 1.143.3 + linux-restricted-modules-3.19.0-30-generic N/A + linux-backports-modules-3.19.0-30-generic N/A + linux-firmware 1.143.3 RfKill: - + Tags: vivid Uname: Linux 3.19.0-30-generic x86_64 UpgradeStatus: Upgraded to vivid on 2015-04-30 (149 days ago) UserGroups: - + _MarkForUpload: True dmi.bios.date: 04/09/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2501 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: M5A97 LE R2.0 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.:bvr2501:bd04/09/2014:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnM5A97LER2.0:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: To be filled by O.E.M. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1499491 Title: 1002:67b1 Display connected on DisplayPort turns black during boot and never returns To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1499491/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs