Mini DisplayPort port not recognized on i915 driver for Linux 5.3 (Ubuntu 19.10)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
Description: Ubuntu 19.10
Release: 19.10
What I expected to happen: The Mini DisplayPort connection should appear.
What happened: There appears to be no Mini DisplayPort connection.
On Ubuntu 19.04 (Linux 5.0.0-x) Mini DisplayPort worked, when upgrading to Ubuntu 19.10 (Linux 5.3.0-x) it stopped working after a reboot.
The computer is a Lenovo T530 with Intel(R) Core(TM) i5-3210M integrated graphics.
No DP connection shows up in /sys/class/drm
$ ls /sys/class/drm/
card0 card0-LVDS-1 card0-VGA-1 renderD128 version
Unsurprisingly no DP connection shows up when running xrandr either.
$ xrandr
Screen 0: minimum 8 x 8, current 1600 x 900, maximum 32767 x 32767
LVDS1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 340mm x 190mm
...
VGA1 disconnected (normal left inverted right x axis y axis)
Module parameters:
$ modinfo -p i915
modeset:Use kernel modesetting [KMS] (0=disable, 1=on, -1=force vga console preference [default]) (int)
enable_dc:Enable power-saving display C-states. (-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6) (int)
enable_fbc:Enable frame buffer compression for power savings (default: -1 (use per-chip default)) (int)
lvds_channel_
panel_use_ssc:Use Spread Spectrum Clock with panels [LVDS/eDP] (default: auto from VBT) (int)
vbt_sdvo_
reset:Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default]) (int)
vbt_firmware:Load VBT from specified file under /lib/firmware (charp)
error_capture:
enable_
enable_psr:Enable PSR (0=disabled, 1=enabled) Default: -1 (use per-chip default) (int)
force_probe:Force probe the driver for specified devices. See CONFIG_
alpha_support:
disable_
enable_ips:Enable IPS (default: true) (int)
fastboot:Try to skip unnecessary mode sets at boot time (0=disabled, 1=enabled) Default: -1 (use per-chip default) (int)
prefault_
load_detect_
force_reset_
invert_
disable_
mmio_debug:Enable the MMIO debug code for the first N failures (default: off). This may negatively affect performance. (int)
verbose_
nuclear_
edp_vswing:
enable_guc:Enable GuC load for GuC submission and/or HuC load. Required functionality can be selected using bitmask values. (-1=auto, 0=disable [default], 1=GuC submission, 2=HuC load) (int)
guc_log_level:GuC firmware logging level. Requires GuC to be loaded. (-1=auto [default], 0=disable, 1..4=enable with verbosity min..max) (int)
guc_firmware_
huc_firmware_
dmc_firmware_
enable_
enable_
enable_gvt:Enable support for Intel GVT-g graphics virtualization host support(
The problem is present on both Wayland and X11.
The problem is present on both Linux 5.3.0-18 and Linux 5.3.0-29.
description: | updated |
Changed in linux (Ubuntu): | |
status: | Incomplete → Confirmed |
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1861218
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.