I was able to get LightDM (or GDM) with hybrid graphics only by manually
specifying an /etc/X11/xorg.conf file like follows (I generated it with
nvidia-xconfig and then made manual modifications following this [1]):
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 440.64
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 1650 with Max-Q Design"
BusID "PCI:1:0:0"
EndSection
Section "Device"
Identifier "Device1"
Driver "intel"
VendorName "Intel"
BusID "PCI:0@0:2:0"
Option "AccelMethod" "SNA"
EndSection
Section "Screen"
Identifier "Screen1"
Device "Device1"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "AllowEmptyInitialConfiguration" "True"
SubSection "Display"
Depth 24
EndSubSection
EndSection
Are you using a similar configuration for X or it just works for you out
of the box?
About the BIOS, I checked and "Set Optimized" was Disable for me,
turning it to Enable seems to make me able to reboot with a Thunderbolt
adapter connected to the port.
Many thanks for your help!
[1] https://gist.github.com/alexlee-gk/76a409f62a53883971a18a11af93241b
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https://bugs.launchpad.net/bugs/1876741
Title:
Lenovo X1 boot crash with HDMI cable attached and laptop lid closed
Status in linux package in Ubuntu:
Confirmed
Bug description:
Hey everyone,
just upgraded to 20.04 in my Lenovo X1 Carbon laptop and found myself in
really big troubles.
I always started my laptop pressing the power button and then closing
the laptop lid, because I'm using an external HDMI display. This
worked always well with Ubuntu 19.10. With 20.04 the system crash.
These are the actions that reproduce the problem:
1 - Boot the system, pressing the power button and closing the laptop lid
with an external HDMI display attached to the laptop;
2 - See on the external HDMI display the boot progress: BIOS loading and then
grub not appearing;
3 - Listen to the fans that are about to make the laptop lift;
4 - Press the power button to force off the laptop;
At this point the only way to have everything back is:
1 - Detach any external device;
2 - Detach the power cable;
3 - Wait 3 seconds or more;
4 - Open the laptop lid;
5 - Attach the power cable;
6 - Press the power button;
Without doing exactly as I written the laptop will not boot up, even
if I force power off, after starting it again, after the BIOS display,
the screen goes blank and the fans lift.
NOTE 1: I already disabled secure boot in the BIOS, and also selected
discrete graphics for the display (otherwise I'm not able to even
start X);
NOTE 2: the scenario is exactly the same with nvidia-driver-435 and
nvidia-driver-440;
NOTE 3: if I leave the laptop lid open, everything is just fine;
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-28-generic 5.4.0-28.32
ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30
Uname: Linux 5.4.0-28-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: rasca 2750 F.... pulseaudio
/dev/snd/controlC1: rasca 2750 F.... pulseaudio
/dev/snd/controlC0: rasca 2750 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon May 4 16:24:47 2020
InstallationDate: Installed on 2019-12-10 (146 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: LENOVO 20QVCTO1WW
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-28-generic
root=UUID=c61df9cc-bd36-4ed2-8f52-de114bbf3fc3 ro rd.driver.blacklist=nouveau
RelatedPackageVersions:
linux-restricted-modules-5.4.0-28-generic N/A
linux-backports-modules-5.4.0-28-generic N/A
linux-firmware 1.187
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-04-28 (6 days ago)
dmi.bios.date: 03/24/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2OET43W (1.30 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20QVCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T08861 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN2OET43W(1.30):bd03/24/2020:svnLENOVO:pn20QVCTO1WW:pvrThinkPadX1Extreme2nd:rvnLENOVO:rn20QVCTO1WW:rvrSDK0T08861WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Extreme 2nd
dmi.product.name: 20QVCTO1WW
dmi.product.sku: LENOVO_MT_20QV_BU_Think_FM_ThinkPad X1 Extreme 2nd
dmi.product.version: ThinkPad X1 Extreme 2nd
dmi.sys.vendor: LENOVO
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