Bug 1397864
| Summary: | Embedded Intel Graphics not working on kernels newer than 4.8.4 - Nonexistent display is detected and used as primary display | ||
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| Product: | [Fedora] Fedora | Reporter: | Charles Dennett <cdennett> |
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 25 | CC: | cdennett, christopherthe1, cz172638, gansalmon, gary.c.wang, ichavero, itamar, jonathan, kernel-maint, madhu.chinakonda, matthias, mchehab |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-12-12 10:24:58 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Charles Dennett
2016-11-23 13:29:59 UTC
Apparently, kernels newer than 4.8.4 think my system has 2 monitors attached to it. It only has one. It has never had two. I'm using the embedded graphics for my one and only monitor. I have never added a second video card. When I run the KDE system settings app and use the display applet, it sees my main monitor and second monitor it describes as a laptop monitor. This system is not a laptop. It is a desk-side system. Only kernels newer than 4.8.4 (ie, 4.8.8.and 4.8.10) show this. The 4.8.4 kernel correctly determines I only have one monitor. Found a workaround. When up brought up system settings (/usr/bin/systemsettings5) and went to the display applet, it showed the 2 montitors. I noticed the real monitor was labeled DP-1. The fake laptop screen was labeled eDP-1. I had been googling around for how to disable monitors at boot time and had come across the kernel parameter "video=DISPLAYNAME:d. I had been trying video=LVDS-1:d since everything I had found mentioned that as the laptop display. This time I tried adding "video=eDP-1:d" to the line for the kernel and it worked. I have since added it to the line in /boot/grub/grub.cfg. So, I've got a workaround but I think this is still a bug worth investigating since it only appeared on kernels newer than 4.8.4 I'll be glad to supply any other information if asked. See Bug #1402066 I'm seeing similar behavior with my F23 XFCE installation on my Thinkpad W541 system that began with the 4.8.8-100 kernel update. Just updated kernel to 4.9.3-200. First of the 4.9 series that's been available from the Fedora repository. The problem persists. I even started up the KDE system settings application and looked at the monitor and display section. It still see two displays. One is my actual Asus monitor and the other is labeled as Laptop Screen eDP-1. This might be the first time I've seen it actually labeled as a Laptop Screen. Recall this system is not a laptop. *********** MASS BUG UPDATE ************** We apologize for the inconvenience. There are a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 24 kernel bugs. Fedora 25 has now been rebased to 4.10.9-100.fc24. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 26, and are still experiencing this issue, please change the version to Fedora 26. If you experience different issues, please open a new bug report for those. I had upgraded to Fedora 25 around the first of the year and the problem persisted. Forgot to update this report to reflect that. Anyway, I just updated to 4.10.8-200.fc25.x86_64, the latest kernel available in the standard repository. The problem persists. I remove the video=eDP-1:d from the kernel line at boot. It still thinks it has two displays - a Laptop screen labeled eDP-1 and my normal monitor screen labeled DP-1. Recall this is a desktop system with just one monitor. I'll update this bug to reflect Fedora 25. Updated to kernel 4.10.9-200.fc25.x86_64. The problem still exists. Updated to kernel 4.10.10-200.fc25.x86_64. The problem still exists. This may be fixed. I just updated the kernel from 4.10.14-200 where the issue still existed to 4.11.6-201. I temporarily removed the "video=eDP-1:d" from the kernel command line at reboot. I verified the parameter was not present by noting the command line in /var/log/messages after reboot. The phantom display is no longer present. I was a bit behind in kernel updates. There were several releases between what I was running and what I updated to, so I can't tell which particular release fixed it. I looked at the changelog embedded in the kernel rpm file but did not see anything obvious. Since no updates have been made to this report, was this perhaps a side effect to fixing a different bug? If so, which one? When I updated the kernel, I did not update any other package. I only updated the kernel package. This message is a reminder that Fedora 25 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 25. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '25'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 25 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Fedora 25 changed to end-of-life (EOL) status on 2017-12-12. Fedora 25 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed. |