I have done a fresh Ubuntu 16.04 install and then I have installaed the
mainline kernel suggested, i.e. 4.6.0-040600rc6-generic.
I have tested all day long the machine and it seems there is no random
monitor shut-down anymore, nor "[drm:intel_cpu_fifo_underrun_irq_handler
[i915]] *ERROR*" in the kernel log.
It seems this problem has somehow been fixed.
Will update in case of new problems.
Thanks for your help.
** Tags added: kernel-fixed-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1573120
Title:
VGA monitor goes to sleep randomly in 16.04
Status in i915 package in Ubuntu:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Bug description:
Without any clear correlation to events, the VGA output of my
NUC5i3RYH goes to sleep, while the other output (HDMI) has no problem.
The running system is Ubuntu MATE 16.04 amd64 with kernel
4.4.0-21.37-generic 4.4.6
The NUC5i3RYH has an onboard HD Intel 5500.
It does NOT happen in 14.04 nor in 15.10.
The monitor can be waken up again with xrandr with this script:
### Switch off DP1 = VGA
xrandr --output HDMI1 --mode 1280x1024 --output DP1 --off
sleep 1
### Turns it on again
xrandr --output HDMI1 --mode 1280x1024 --output DP1 --mode 1280x1024
--auto --right-of HDMI1 --primary
The only info I found is in kern.log:
[80299.466886] [drm:intel_cpu_fifo_underrun_irq_handler [i915]]
*ERROR* CPU pipe A FIFO underrun
No info in Xorg.log
Will someone please help?
Thanks.
Marco
The relevant part of lspci about the GPU is:
00:02.0 VGA compatible controller [0300]: Intel Corporation Broadwell-U
Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Intel Corporation Broadwell-U Integrated Graphics [8086:2057]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 45
Region 0: Memory at a9000000 (64-bit, non-prefetchable) [size=16M]
Region 2: Memory at b0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at 2000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Address: fee00018 Data: 0000
Capabilities: [d0] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [a4] PCI Advanced Features
AFCap: TP+ FLR+
AFCtrl: FLR-
AFStatus: TP-
Kernel driver in use: i915
Kernel modules: i915
I've tried to report the bug in the i915 package but the launchpad reports
<<"i915" does not exist in Ubuntu. Please choose a different package. If you're
unsure, please select "I don't know">>.
---
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: marco 7591 F.... pulseaudio
/dev/snd/controlC0: marco 7591 F.... pulseaudio
CurrentDesktop: MATE
DistroRelease: Ubuntu 16.04
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-04-16 (5 days ago)
InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Beta amd64
(20160323.1)
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-21-generic
root=UUID=b613d30c-820e-49a7-96fd-bd83a16a9147 ro quiet splash vt.handoff=7
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
Tags: xenial
Uname: Linux 4.4.0-21-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip disk lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 01/20/2016
dmi.bios.vendor: Intel Corporation
dmi.bios.version: RYBDWi35.86A.0354.2016.0120.0912
dmi.board.name: NUC5i3RYB
dmi.board.vendor: Intel Corporation
dmi.board.version: H41000-502
dmi.chassis.type: 3
dmi.modalias:
dmi:bvnIntelCorporation:bvrRYBDWi35.86A.0354.2016.0120.0912:bd01/20/2016:svn:pn:pvr:rvnIntelCorporation:rnNUC5i3RYB:rvrH41000-502:cvn:ct3:cvr:
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