Public bug reported: Ubuntu 15.10 was working fine, but on upgrading to 16.04, my HDMI display goes into low-power mode once the kernel starts booting.
Logging in over ssh I can see these errors in the kernel log: [ 1.730599] i915 0000:00:02.0: No connectors reported connected with modes [ 1.730607] [drm] Cannot find any crtc or sizes - going 1024x768 System is an Intel NUC DN2820FYK 00:02.0 VGA compatible controller [0300]: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display [8086:0f31] (rev 0c) Kernel version: linux-image-4.4.0-21-generic Workaround: add video=HDMI-A-1:1920x1080@60D to kernel parameters --- ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dsd 1696 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 16.04 HibernationDevice: RESUME=UUID=e53c2a43-d5d9-4c58-9bae-a6d63b8a4fa1 InstallationDate: Installed on 2014-08-30 (604 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 8087:07dc Intel Corp. Bus 001 Device 003: ID 046d:c31d Logitech, Inc. Media Keyboard K200 Bus 001 Device 002: ID 046d:c05a Logitech, Inc. M90/M100 Optical Mouse Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ��������������������������������� ��������������������������������� Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=39a14ffe-9286-4cfa-9362-bf5bfef37843 ro quiet splash crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M vt.handoff=7 video=HDMI-A-1:1920x1080@60D ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 RelatedPackageVersions: linux-restricted-modules-4.4.0-21-generic N/A linux-backports-modules-4.4.0-21-generic N/A linux-firmware 1.157 RfKill: 0: phy0: Wireless LAN Soft blocked: yes Hard blocked: no Tags: xenial Uname: Linux 4.4.0-21-generic x86_64 UpgradeStatus: Upgraded to xenial on 2016-04-25 (0 days ago) UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo video _MarkForUpload: True dmi.bios.date: 12/12/2014 dmi.bios.vendor: Intel Corp. dmi.bios.version: FYBYT10H.86A.0045.2014.1212.1150 dmi.board.name: DN2820FYK dmi.board.vendor: Intel Corporation dmi.board.version: H24582-201 dmi.chassis.asset.tag: ��������������������������������� dmi.chassis.type: 3 dmi.chassis.vendor: ��������������������������������� dmi.chassis.version: ��������������������������������� dmi.modalias: dmi:bvnIntelCorp.:bvrFYBYT10H.86A.0045.2014.1212.1150:bd12/12/2014:svn:pn:pvr:rvnIntelCorporation:rnDN2820FYK:rvrH24582-201:cvn:ct3:cvr: dmi.product.name: ��������������������������������� dmi.product.version: ��������������������������������� dmi.sys.vendor: ��������������������������������� ** Affects: linux (Ubuntu) Importance: Undecided Status: Confirmed ** Tags: apport-collected xenial ** Tags added: apport-collected xenial ** Description changed: Ubuntu 15.10 was working fine, but on upgrading to 16.04, my HDMI display goes into low-power mode once the kernel starts booting. Logging in over ssh I can see these errors in the kernel log: [ 1.730599] i915 0000:00:02.0: No connectors reported connected with modes [ 1.730607] [drm] Cannot find any crtc or sizes - going 1024x768 System is an Intel NUC DN2820FYK 00:02.0 VGA compatible controller [0300]: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display [8086:0f31] (rev 0c) Kernel version: linux-image-4.4.0-21-generic Workaround: add video=HDMI-A-1:1920x1080@60D to kernel parameters + --- + ApportVersion: 2.20.1-0ubuntu2 + Architecture: amd64 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC0: dsd 1696 F.... pulseaudio + CurrentDesktop: GNOME + DistroRelease: Ubuntu 16.04 + HibernationDevice: RESUME=UUID=e53c2a43-d5d9-4c58-9bae-a6d63b8a4fa1 + InstallationDate: Installed on 2014-08-30 (604 days ago) + InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) + Lsusb: + Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub + Bus 001 Device 004: ID 8087:07dc Intel Corp. + Bus 001 Device 003: ID 046d:c31d Logitech, Inc. Media Keyboard K200 + Bus 001 Device 002: ID 046d:c05a Logitech, Inc. M90/M100 Optical Mouse + Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + MachineType: ��������������������������������� ��������������������������������� + Package: linux (not installed) + ProcFB: 0 inteldrmfb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=39a14ffe-9286-4cfa-9362-bf5bfef37843 ro quiet splash crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M vt.handoff=7 video=HDMI-A-1:1920x1080@60D + ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 + RelatedPackageVersions: + linux-restricted-modules-4.4.0-21-generic N/A + linux-backports-modules-4.4.0-21-generic N/A + linux-firmware 1.157 + RfKill: + 0: phy0: Wireless LAN + Soft blocked: yes + Hard blocked: no + Tags: xenial + Uname: Linux 4.4.0-21-generic x86_64 + UpgradeStatus: Upgraded to xenial on 2016-04-25 (0 days ago) + UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo video + _MarkForUpload: True + dmi.bios.date: 12/12/2014 + dmi.bios.vendor: Intel Corp. + dmi.bios.version: FYBYT10H.86A.0045.2014.1212.1150 + dmi.board.name: DN2820FYK + dmi.board.vendor: Intel Corporation + dmi.board.version: H24582-201 + dmi.chassis.asset.tag: ��������������������������������� + dmi.chassis.type: 3 + dmi.chassis.vendor: ��������������������������������� + dmi.chassis.version: ��������������������������������� + dmi.modalias: dmi:bvnIntelCorp.:bvrFYBYT10H.86A.0045.2014.1212.1150:bd12/12/2014:svn:pn:pvr:rvnIntelCorporation:rnDN2820FYK:rvrH24582-201:cvn:ct3:cvr: + dmi.product.name: ��������������������������������� + dmi.product.version: ��������������������������������� + dmi.sys.vendor: ��������������������������������� -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574758 Title: i915 HDMI display turns off during boot after upgrade to 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1574758/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs