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DescriptionVasiliy Sharapov
2016-10-07 23:05:44 UTC
Created attachment 1208277[details]
vmcore-dmesg.txt
Description of problem:
Kernel crashes when an MST-capable monitor plugged into the T450s's mini-DP port is power cycled.
Version-Release number of selected component (if applicable):
RHEL-7.3-20160929.5
xorg-x11-server-Xorg-1.17.2-22.el7.x86_64
xorg-x11-drv-intel-2.99.917-22.20151206.el7.x86_64
kernel-3.10.0-511.el7.x86_64
linux-firmware-20160830-49.git7534e19.el7.noarch
package mesa is not installed
mesa-dri-drivers-11.2.2-2.20160614.el7.x86_64
package xorg-x11-glamor is not installed
How reproducible:
100%
Steps to Reproduce:
1. Power on a T450s with a Dell P2415Q MST-capable display plugged in.
(There doesn't need to be a display daisy-chained via MST)
2. Try hotplugging the mini-DP port on the T450s, there should be no crashes
3. Try power cycling the MST display either via the power button or the display's power cord
Actual results:
kernel crashes
Expected results:
same effect as hotplugging the display
Additional info:
Created attachment 1208277 [details] vmcore-dmesg.txt Description of problem: Kernel crashes when an MST-capable monitor plugged into the T450s's mini-DP port is power cycled. Version-Release number of selected component (if applicable): RHEL-7.3-20160929.5 xorg-x11-server-Xorg-1.17.2-22.el7.x86_64 xorg-x11-drv-intel-2.99.917-22.20151206.el7.x86_64 kernel-3.10.0-511.el7.x86_64 linux-firmware-20160830-49.git7534e19.el7.noarch package mesa is not installed mesa-dri-drivers-11.2.2-2.20160614.el7.x86_64 package xorg-x11-glamor is not installed How reproducible: 100% Steps to Reproduce: 1. Power on a T450s with a Dell P2415Q MST-capable display plugged in. (There doesn't need to be a display daisy-chained via MST) 2. Try hotplugging the mini-DP port on the T450s, there should be no crashes 3. Try power cycling the MST display either via the power button or the display's power cord Actual results: kernel crashes Expected results: same effect as hotplugging the display Additional info: