[Bug 104147] New: SKL Dell docking station second DP not detected
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Wed Dec 6 20:50:53 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=104147
Bug ID: 104147
Summary: SKL Dell docking station second DP not detected
Product: DRI
Version: DRI git
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: rtvernam at gmail.com
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
Created attachment 136013
--> https://bugs.freedesktop.org/attachment.cgi?id=136013&action=edit
drm-tip kernel config
On a Dell Precision 7510 with a Dell E-Port Plus II docking station, a monitor
on the second display port or dvi plug never shows connected when using the
intel video.
This configuration works just fine on Windows.
The laptop includes an AMD card as well; if I disable the intel video and use
only the AMD video, this configuration also works just fine.
This has never worked as long as I've had this laptop, which dates back to Dec
2015.
I have used many vanilla kernels from probably 4.1 or 4.2 up through current
drm-tip. The rest of the system is Gentoo.
Kernel command line is: root=/dev/nvme0n1p2 ro init=/usr/lib/systemd/systemd
drm.debug=0xe
I boot the kernel directly from the EFI, I don't use grub or any other
bootloader.
I will have three attachments: kernel-config, dmesg output & xrandr --verbose
output.
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