External monitor connecting problem on Intel graphics card

[naveenkumarmula]

I am facing a problem with Intel Graphics driver. I have external monitor and in display settings the second monitor is detecting but it's not working, so could you email me a solution.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
Uname: Linux 4.4.25-040425-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Tue Apr 25 21:45:16 2017
DistUpgraded: 2017-04-25 21:07:40,819 DEBUG icon theme changed, re-reading
DistroCodename: xenial
DistroVariant: ubuntu
DkmsStatus: i915-4.6.3-4.4.0, 1, 4.4.0-75-generic, x86_64: installed
GraphicsCard:
 Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Dell Haswell-ULT Integrated Graphics Controller [1028:05e9]
InstallationDate: Installed on 2017-04-25 (0 days ago)
InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803)
MachineType: Dell Inc. Inspiron 3537
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.25-040425-generic root=UUID=3914e6d5-5c87-4816-8043-776ef4184d29 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to xenial on 2017-04-25 (0 days ago)
dmi.bios.date: 04/30/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.name: 03JPPR
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A08
dmi.modalias: dmi:bvnDellInc.:bvrA08:bd04/30/2014:svnDellInc.:pnInspiron3537:pvrA08:rvnDellInc.:rn03JPPR:rvrA00:cvnDellInc.:ct8:cvrA08:
dmi.product.name: Inspiron 3537
dmi.product.version: A08
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.70-1~ubuntu16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 12.0.6-0ubuntu0.16.04.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 12.0.6-0ubuntu0.16.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Tue Apr 25 21:37:24 2017
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 17900
 vendor AUO
xserver.version: 2:1.18.4-0ubuntu0.2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Giacomo Orlandi (giaco-orlandi)]

I have the same problem on 16.04.2 Xenial since upgrading the Kernel to 4.4.0-75 yesterday.
Booting the the older kernel version 4.4.0-72-generic seems to be a workaround.

[Giacomo Orlandi (giaco-orlandi)]

Sorry for spamming everyone, as this started happening after a kernel upgrade is it a Kernel bug?

[Giacomo Orlandi (giaco-orlandi)]

@naveenkumarmula do you mind trying to boot with the previous kernel version and see if that fixes it for you too? You should be able to choose the Kernel to start at boot.

Btw I'm also on Intel graphics

[Giacomo Orlandi (giaco-orlandi)]

I have this problem since linux-image-4.4.0-75
linux-image-4.4.0-77 is also affected.
linux-image-4.4.0-72 works

[Brad Figg (brad-figg)]

This change was made by a bot.

[Tharrrk (tharrrk)]

Confirming the same issue - 4.4.0-72 works on Dell E7470 with intel, 4.4.0-77 doesn't.
Seems like a kernel bug.
xrandr showing screens but displays fall into sleep whatever I try.
plymouth not affected, only X.

[Robert David (rdavid369)]

Confirming the same issues - 4.4.0-77 bugs and wont display external screens on Dell E7250. Can run with 4.4.0-72 kernel and everything is just fine.

[nekojira (nekojira)]

can confirm what others have reported above with 16.04

with 4.4.0-77 I have the issue, the issue wasn't/isn't present with 4.4.0-72 and below

I'm unsure if this problem originates from a Xorg package - from the most recent Linux Kernel changelogs I think I noticed some bugfix that could affect this issue, but I don't have sufficient expertise to be 100% sure of that

[gali (guillaume-galibert)]

Same problem here. Reverting to 4.4.0-72 fixed the issue.

[Shay Perlstein (sperlst-s)]

Can confirm nvidia with and without intel profile get the same problem with 4.4.0-78-generic
same case was with 4.4.0-77-generic.

[nekojira (nekojira)]

there was some improvement with 4.4.0-78 but still is ongoing - Ubuntu can't wake a suspended monitor, doesn't remember monitors positions

[Unknown Ubuntu User (wy75sdchobrchywi4pj0-deactivatedaccount)]

For me, 4.4.0-78 actually made it worse on my Dell Latitude E7250 to the point where I had to downgrade to 4.4.0-72 in order to be able to use external monitors again.

With versions prior to 4.4.0-78, running xrandr a couple of times would usually cycle through all kinds of weird broken setups with parts of what was supposed to be shown on one monitor being shown in the corner of a different monitor and similar problems.

But after a few attempts, it used to somehow "get it right" and display the right layout.

With 4.4.0-78, this workaround stopped working as even though the layout may be correct, there simply is "no signal" on external monitors. They are detected by xrandr as being present and connected, the window manager appears to recognize them but neither of them receives a video signal so they just go to sleep after a few seconds.

The built-in notebook display keeps working all the time.

External monitors appear to work up to the point at which the switch from "VESA VGA" to "inteldrmfb" occurs.

After going back to 4.4.0-72, all issues went away. Even the layout options given to xrandr now work as expected.

I looks like something is horribly wrong with Intel graphics support.

[Kai-Heng Feng (kaihengfeng)]

Maybe graphics driver doesn't exist at all?
Can you attach output of `dpkg -l | grep linux-image`?

[Shay Perlstein (sperlst-s)]

Same thing here, 4.4.0-78 does not solve the problem at all, I barely can work, is there going to be any attempt to fix this soon?

[Giacomo Orlandi (giaco-orlandi)]

@kaihengfeng this is my output of that command:
~ $ dpkg -l | grep linux-image
hi linux-image-4.4.0-72-generic 4.4.0-72.93 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
ii linux-image-4.4.0-78-generic 4.4.0-78.99 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
hi linux-image-extra-4.4.0-72-generic 4.4.0-72.93 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
ii linux-image-extra-4.4.0-78-generic 4.4.0-78.99 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
ii linux-image-generic 4.4.0.78.84 amd64 Generic Linux kernel image

I marked the 4.4.0-72 version to hold.
However maybe you wanted to grep for "intel" rather than linux-image? Isn't the graphics driver in the xserver-xorg-video-intel package?

[Kai-Heng Feng (kaihengfeng)]

Most kernel drivers are in extra package, i.e. linux-image-extra-4.4.0-78-generic.

There are only two commits between -72 to -78:
commit 2fce21649c85703a63e9c70ccc6e3b9caa813041
Author: Mika Kuoppala <email address hidden>
Date: Wed Feb 15 15:52:59 2017 +0200

    drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3

commit 81ac6f8ab65e3bc8311af92cf31326dba3135364
Author: Chris Wilson <email address hidden>
Date: Mon Mar 13 17:06:17 2017 +0000

    drm/i915: Stop using RP_DOWN_EI on Baytrail

Both commits' change are limited to Baytrail. Yours is Haswell so I don't think this bug is related to Linux kernel here.

[Giacomo Orlandi (giaco-orlandi)]

The problem is only reproducible with some Kernel versions, how can it not be related to the Kernel?
I actually have a Sky Lake, not a Haswell like the reporter.
So maybe one of those commits for Baytrail caused a regression on other Intel Graphics processors?

Another culprit seems to be Dell laptops... I'm on a Dell Latitude E7470, other people mentioned them too, although it might just be because it's a common brand.

[Robert David (rdavid369)]

I am having the same issues even with the newer Kernel, 4.4.0-79-generic.

Like others have mentioned above, I can mess with the settings and sometimes "it gets it" and other times it just causes the whole machine to lock up and I have to force reboot it. Even when the monitors do show up in xrandr - they are blank with the no signal screen. Messing with the settings becomes a 50/50 but even if it does "manage to find it", the moment you have to walk away, or the screen goes to sleep, its not coming back. Here is a screen shot of the error I get sometimes, other times, there is no error and the machine just locks.

I am also on a Dell E7250
Intel Core i5-5300
Intel HD Graphics 5500 Broadwell GT2

[Kai-Heng Feng (kaihengfeng)]

@Giacomo
On Xenial's linux 4.4, Skylake uses i915_bpo instead of i915.
Please file a separate bug for this.

@Robert
What version was the last working linux kernel?

[Shay Perlstein (sperlst-s)]

I jumped to 4.10.1-041001-generic since I failed to go back to 4.4.0-72 which used to work, everything is working again as it should without any problem, I am now using the latest nvidia driver 381.22 (, also 378.13 worked perfectly fine).
The kernel version definitely makes a difference

BTW on 4.4.0-79 the log error has disappeared but the issue still exists, I tested 4.4.0-79 with both nvidia and Nouveau drivers.

[Robert David (rdavid369)]

@Kai-Heng
4.4.0-72-generic

As long as I boot with that Kernel, I have no issues. Every one after that, just gives me the above issues.

[Giacomo Orlandi (giaco-orlandi)]

Version 4.4.0-72-generic seems to be the last version that works for everyone here, on different systems. I renamed this bug to mention Intel, but Shay Perlstein above had the same problem on NVidia.

@Kai-Heng could it be the same bug even if on different graphic drivers? Do you know if there is any code/module that is used for external monitors regardless of the graphics card?
For example this entry from the changelog sounds like it might be related:
  - drm/dp/mst: fix kernel oops when turning off secondary monitor

I should have mentioned that I have this problem using a Dell docking station, and I have 2 external monitors connected to it, 1 connected using the display port, the other one using DVI. It wasn't working when using 2 display ports even before 4.4.0-72-generic.

[Robert David (rdavid369)]

Not sure if this is a coincidence or what, but I'm also using a Dell Docking Station / Port replicator.

[Kai-Heng Feng (kaihengfeng)]

@Robert @Giacomo
Are Linux kernel 4.4.0-73 ~ 4.4.0-77 all failed to work?
Can you paste the output of `lsmod | grep i915` here?
Also, which docking station do you use? I have an USB type-C docking station (TB15) at my hand, but I am not sure if you use this one...

@Robert
I am not sure which driver Broadwell uses, i915 or i915_bpo.
Do you use the port on the Docking station? Does this happen on laptop's port?

@Giacomo
IIUC "drm/dp/mst: fix kernel oops when turning off secondary monitor" only silence the annoying kernel trace, it does not bring any functional change.

[Shay Perlstein (sperlst-s)]

NVidia setup is also including a second intel card (for power saving mode), but yes I mainly try to use NVidia profile (kernel used to complain about the intel card just like it is in your case).

Secondly not only 4.4.0-72-generic is working also 4.10.1-041001-generic does very good job.

As for last, as mentioned above I also use the DELL dock.

[Giacomo Orlandi (giaco-orlandi)]

@Kai-Heng I use a Dell E-Port Plus.

This is my ouput of lsmod | grep i915:
i915_bpo 1302528 5
intel_ips 20480 1 i915_bpo
i2c_algo_bit 16384 1 i915_bpo
drm_kms_helper 155648 1 i915_bpo
drm 364544 6 i915_bpo,drm_kms_helper
video 40960 3 i915_bpo,dell_wmi,dell_laptop

[gali (guillaume-galibert)]

@Kai-Heng, if that can help this is my configuration below:
-Dell Latitude E7450 on a Dell docking station with two screens (1 VGA , the other
-Intel® Core™ i7-5600U CPU @ 2.60GHz × 4
-GeForce 840M/PCIe/SSE2

ggalibert@ggalibert-Latitude-E7450:~$ lsmod | grep i915
i915 1208320 3
i2c_algo_bit 16384 1 i915
drm_kms_helper 155648 2 i915,nvidia_drm
drm 364544 6 i915,drm_kms_helper,nvidia_drm
video 40960 3 i915,dell_wmi,dell_laptop

Last working kernel version is 4.4.0-72.

[Kai-Heng Feng (kaihengfeng)]

Can you try if these kernel works?
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.10/
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11/

[Kai-Heng Feng (kaihengfeng)]

Also, please try 4.8 and 4.9.

[Kai-Heng Feng (kaihengfeng)]

Last but not least, try latest 4.4 stable kernel: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.71/

[Tharrrk (tharrrk)]

E7470 on Dell dock 0PDXXF here as well. LCD(eDP-1)+DVI(DP-1-1)+VGA(DP-1-3).
Intel graphics only.

I'm running 4.4.0-79-lowlatency now.

DISTRIB_ID=neon
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="KDE neon User Edition 5.10"

I've found out that graphics come up after I switch to vt1 (Ctrl-Alt-F1) for a while and then back (Alt-F7). I didn't try more than once, displays just came up.

I've also noticed that -78 worked fine if I rebooted from -72 without powering the machine off.

Does this trick work for anybody else?

Cheers
Tharrrk

[Robert David (rdavid369)]

@Kai-Heng

Sorry for delay - been off work due to injury :(

lsmod | grep i915:

rodavid@rodavid-Latitude-E7250:~$ lsmod | grep i915
i915 1208320 5
i2c_algo_bit 16384 1 i915
drm_kms_helper 155648 1 i915
drm 364544 6 i915,drm_kms_helper
video 40960 3 i915,dell_wmi,dell_laptop

Drivers 4.4.0-73 ~ 4.4.0-77 all seem to have the monitor issues. 72 has been the only one I can reliably use. Some of them "seem to work" after messing with the settings, but any time the screen goes to sleep, it almost never comes back and sometimes the machine will actually lock up forcing me to power off.

[Kai-Heng Feng (kaihengfeng)]

Hi, please try Linux kernel version 4.4.71, 4.8, 4.9 at [1] so I can know the what exact patch series fixed the issue.

My guess is that backported lspcon feature broke some machine. But since 4.10 works, we need to backport more patches to ours 4.4 Linux.

[1] http://kernel.ubuntu.com/~kernel-ppa/mainline

[Robert David (rdavid369)]

@Kai-Heng

Per request in #30, I installed version 4.10. Everything seems to be working just fine now. First Kernel outside of 4.4.72 that has worked for me.

rodavid@rodavid-Latitude-E7250:~$ lsmod | grep i915
i915 1449984 5
i2c_algo_bit 16384 1 i915
drm_kms_helper 151552 1 i915
drm 352256 6 i915,drm_kms_helper
video 40960 4 dell_wmi,dell_laptop,int3406_thermal,i915

Let me know if you want me to try 4.11 like you mentioned as well. Sorry if the information I posted isn't any help, not the biggest Linux power user yet. Let me know if there is any other information I can provide that helps.

[Kai-Heng Feng (kaihengfeng)]

Thanks for the testing.
Can you also try 4.4.71, 4.8, 4.9 as #35 states?

[Moritz Imendörffer (morrr)]

Still the same issue:

4.11.7-041107-generic #201706240231 SMP Sat Jun 24 06:33:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 07)

i915 1495040 9
i2c_algo_bit 16384 1 i915
drm_kms_helper 155648 1 i915
drm 352256 10 i915,drm_kms_helper
video 40960 2 thinkpad_acpi,i915

[Kai-Heng Feng (kaihengfeng)]

Moritz,

Do you use a docking station?

[Giacomo Orlandi (giaco-orlandi)]

Sorry for the delay, I tried:
linux-image-4.4.0-83-generic doesn't work
linux-image-4.8.0-040800-generic doesn't work
linux-image-4.10.0-041000-generic works
linux-image-4.11.0-041100-generic works

By the way, I didn't mention is that even the kernel versions that work are far from perfect. When I first login one of the 2 external screens goes black or starts flickering, but there is a workaround. I have to switch to text mode (Ctrl+Alt+F1) and back. With the kernel versions that don't work I couldn't find any workaround, the external screens go black and they don't switch on anymore.
Also, when I undock it while it's running it often crashes, and if it doesn't it crashes when I dock it back. Switching to text mode before docking/undocking seems to make more stable. That's most likely a different bug though.

[Shay Perlstein (sperlst-s)]

@Giacomo Orlandi, I experience what you describe since day one with Ubuntu 16.04 (DELL + USB DOCK). My work around is to disable the flickering screen and revert the settings.

[Moritz Imendörffer (morrr)]

@Kai-Heng:

I do use a mini Displayport Cable with a Lenovo Thinkpad T460S. In the meantime I tried every kernel I could install using ukuu. However, none of them worked. Prior to Ukuu I did use a kernel from the nightly builds (drm-intel) and the monitor worked but WLAN not. Therefore, I deinstalled it. Unfortunately, I cannot remember which kernel it was.

[Moritz Imendörffer (morrr)]

The drm nightly kernel works for me (4.12.0-994-lowlatency). However, I do not have WLAN.

[Moritz Imendörffer (morrr)]

I tried Ubuntu 17.04, still the same issue.

[cyba (marcus-kempe)]

Same problem here, affects me on 4.4.0-93-generic. Dell E7450 with docking station and 2 monitors, used to work flawlessly on 14.04.

[Kai-Heng Feng (kaihengfeng)]

It should be fixed in later 4.4 kernel [1]

In the interim, please try kernel [2].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=12aa6f7f80c17ea47d0e186bade52272d0a77514
[2] http://people.canonical.com/~khfeng/1686189/

[Giacomo Orlandi (giaco-orlandi)]

@Kai-Heng: the problem is fixed here using your 4.4.0-99 version on my Dell Latitude E7470 with Skylake.
Well it's buggy like on 4.4.0-72, after loggin both screens go black, but I have my workaround works again. If I switch to text mode (Ctrl+Alt+F1) and back (Alt+F7) both screens work

[Kai-Heng Feng (kaihengfeng)]

Thanks for your testing.

The blank screen issue was always there, right?
I think use modesetting driver instead of intel DDX should fix the issue.
You can either use xorg.config or "apt purge xserver-xorg-video-intel" to switch to modesetting driver.

[Giacomo Orlandi (giaco-orlandi)]

@Kai-Heng thanks a lot, using the modesetting driver helped!
I just read that using the Intel driver is not recommended anymore on newer systems, I didn't know that.

[Kai-Heng Feng (kaihengfeng)]

Linux kernel v4.4.0-100 in xenial-proposed contains the fix. Please give it a try.

[Giacomo Orlandi (giaco-orlandi)]

@Kai-Heng I'm running that now it seems to be working well:
$ uname -a
Linux giacomo-awin-latitude 4.4.0-100-generic #123-Ubuntu SMP Thu Nov 2 10:16:13 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

I see many changes in the changelog, what's the patch that fixed it?

[Kai-Heng Feng (kaihengfeng)]

> On 9 Nov 2017, at 6:04 PM, Giacomo Orlandi <email address hidden> wrote:
>
> @Kai-Heng I'm running that now it seems to be working well:
> $ uname -a
> Linux giacomo-awin-latitude 4.4.0-100-generic #123-Ubuntu SMP Thu Nov 2 10:16:13 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
>
>
> I see many changes in the changelog, what's the patch that fixed it?

This one:
    - drm/dp/mst: save vcpi with payloads

Kai-Heng

>
> --
> You received this bug notification because you are a bug assignee.
> https://bugs.launchpad.net/bugs/1686189
>
> Title:
> External monitor connecting problem on Intel graphics card
>
> Status in linux package in Ubuntu:
> Confirmed
> Status in xorg package in Ubuntu:
> Confirmed
>
> Bug description:
> I am facing a problem with Intel Graphics driver. I have external
> monitor and in display settings the second monitor is detecting but
> it's not working, so could you email me a solution.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 16.04
> Package: xorg 1:7.7+13ubuntu3
> Uname: Linux 4.4.25-040425-generic x86_64
> .tmp.unity_support_test.0:
>
> ApportVersion: 2.20.1-0ubuntu2.5
> Architecture: amd64
> CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
> CompositorRunning: compiz
> CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
> CompositorUnredirectFSW: true
> CurrentDesktop: Unity
> Date: Tue Apr 25 21:45:16 2017
> DistUpgraded: 2017-04-25 21:07:40,819 DEBUG icon theme changed, re-reading
> DistroCodename: xenial
> DistroVariant: ubuntu
> DkmsStatus: i915-4.6.3-4.4.0, 1, 4.4.0-75-generic, x86_64: installed
> GraphicsCard:
> Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
> Subsystem: Dell Haswell-ULT Integrated Graphics Controller [1028:05e9]
> InstallationDate: Installed on 2017-04-25 (0 days ago)
> InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803)
> MachineType: Dell Inc. Inspiron 3537
> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.25-040425-generic root=UUID=3914e6d5-5c87-4816-8043-776ef4184d29 ro quiet splash vt.handoff=7
> SourcePackage: xorg
> UpgradeStatus: Upgraded to xenial on 2017-04-25 (0 days ago)
> dmi.bios.date: 04/30/2014
> dmi.bios.vendor: Dell Inc.
> dmi.bios.version: A08
> dmi.board.name: 03JPPR
> dmi.board.vendor: Dell Inc.
> dmi.board.version: A00
> dmi.chassis.type: 8
> dmi.chassis.vendor: Dell Inc.
> dmi.chassis.version: A08
> dmi.modalias: dmi:bvnDellInc.:bvrA08:bd04/30/2014:svnDellInc.:pnInspiron3537:pvrA08:rvnDellInc.:rn03JPPR:rvrA00:cvnDellInc.:ct8:cvrA08:
> dmi.product.name: Inspiron 3537
> dmi.product.version: A08
> dmi.sys.vendor: Dell Inc.
> version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1
> version.ia32-libs: ia32-libs N/A
> version.libdrm2: libdrm2 2.4.70-1~ubuntu16.04.1
> version.libgl1-mesa-dri: libgl1-mesa-dri 12.0.6-0ubuntu0.16.04.1
> version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
> version.libgl1-mesa-glx: libgl1-mesa-glx 12.0.6-0ubuntu0.16.04.1
> version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.2
> version.xserver-xorg-inp...

[gali (guillaume-galibert)]

Are we going to see this released in xenial-main?

[mauro (m-santini)]

Hi there,

I'm facing still this problem with kernel 4.4.0-116-generic

Any documentation I can post to help?
Dmesg?

thanks

[Kai-Heng Feng (kaihengfeng)]

Do you have package "xserver-xorg-video-intel"?

[mauro (m-santini)]

Yes, I do.

I have this problem only with some monitors / TV.

[mauro (m-santini)]

THis is the result with

dmesg | grep intel

[ 1.987610] intel_idle: MWAIT substates: 0x20220
[ 1.987629] intel_idle: v0.4.1 model 0x1C
[ 1.987634] intel_idle: lapic_timer_reliable_states 0x2
[ 2.013276] agpgart-intel 0000:00:00.0: Intel 945GME Chipset
[ 2.013330] agpgart-intel 0000:00:00.0: detected gtt size: 262144K total, 262144K mappable
[ 2.013427] agpgart-intel 0000:00:00.0: detected 8192K stolen memory
[ 2.013765] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xd0000000
[ 3.378181] fb: switching to inteldrmfb from VESA VGA
[ 3.808471] WARNING: CPU: 0 PID: 6 at /build/linux-0c7Pc_/linux-4.4.0/drivers/gpu/drm/i915/intel_fbdev.c:406 intel_fb_initial_config+0x2d4/0x5f0 [i915]()
[ 3.808696] [<f8acafb4>] ? intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 3.808796] [<f8acafb4>] ? intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 3.808904] [<f8acafb4>] intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 3.809006] [<f8acace0>] ? intel_crtc_fb_gamma_get+0x40/0x40 [i915]
[ 3.809198] [<f8acbe90>] ? intel_fbdev_init+0x530/0x530 [i915]
[ 3.809298] [<f8acbea9>] intel_fbdev_initial_config+0x19/0x20 [i915]
[ 3.812450] fbcon: inteldrmfb (fb0) is primary device
[ 3.812844] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 3.832514] WARNING: CPU: 0 PID: 87 at /build/linux-0c7Pc_/linux-4.4.0/drivers/gpu/drm/i915/intel_fbdev.c:406 intel_fb_initial_config+0x2d4/0x5f0 [i915]()
[ 3.832759] [<f8acafb4>] ? intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 3.832859] [<f8acafb4>] ? intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 3.832967] [<f8acafb4>] intel_fb_initial_config+0x2d4/0x5f0 [i915]
[ 3.833069] [<f8acace0>] ? intel_crtc_fb_gamma_get+0x40/0x40 [i915]
[ 3.833334] [<f8acc05a>] intel_fbdev_output_poll_changed+0x1a/0x20 [i915]
[ 3.834328] [<f8ab52e8>] ? intel_pre_plane_update+0xd8/0x130 [i915]
[ 3.834428] [<f8ab5cff>] intel_atomic_commit+0x52f/0x6a0 [i915]
[ 3.834988] [<f8acc05a>] intel_fbdev_output_poll_changed+0x1a/0x20 [i915]
[ 16.748840] intel_rng: FWH not detected
[ 19.441617] intel_powerclamp: No package C-state available

at the 4th line I found that I have

Intel 945GME Chipset

and not I915 as referred later on in dmesg.

does it effect this thread?

cheers

[Kai-Heng Feng (kaihengfeng)]

Please see if this issue can be solved after remove xserver-xorg-video-intel.

Also, 945GME is quite different to the one used by original bug reporter...

[mauro (m-santini)]

I tried to remove but if I do also this packeges will e removed

- lubuntu-core
- lubuntu-desktop

So I did apt-get install --reinstal xserver-xorg-video-intel but nothing has changed.

If I plug in the VGA and open a window I can see that the system see the monitor anch I can set via the 'monitor setting' what to show where but the PC input of the TV doesn't highlight and can't connect/show remotely

Please advise if we need to open a new bug with this chipset rather than continue here.

[Kai-Heng Feng (kaihengfeng)]

You can also modify the xorg.conf to prioritize modesetting driver over intel.

[mauro (m-santini)]

quick update.

Although the VGA cable I used with the intel chipset was working fine with other laptop/monitor telling me ihe cable is 'fine', it happen I tried a different VGA cable and this time everything work fine.

So far I suppose it is a cable pin out problem

I'll be happy to provide more info if required

thanks

[TF (cactus-online)]

I'm using a HP Pro X2 612 G1. It has VGA compatible controller: Intel Corporation Device 0a1e (rev 0b) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Device 221b. The external Monitor (connected to DisplayPort) is recognized, but it the grafics is distorted and flickering. There is no hardware issue, because the same configuration is working with windows 10.

Booting Linux version 5.3.0-26-generic (buildd@lgw01-amd64-039) (gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)) #28~18.04.1-Ubuntu SMP Wed Dec 18 , Command line: BOOT_IMAGE=/vmlinuz-5.3.0-26-generic root=UUID=480802c1-9e34-498b-bce0-044986a92dfc ro quiet splash i915.edp_vswing=1 vt.handoff=1.

I tried booting without any i915 parameters, but it doesn't change the behavior.

Any ideas what's going wrong ?

[TF (cactus-online)]

Same fault by using VGA instead of DP.