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Dell Latitude 5400 screen freezing after BIOS update 1.9.1 (Ubuntu 18/20 LTS)
Hi,
I received a new Dell Latitude 5400 shipped with Windows 10 64-bit.
I Had to install the late Linux Ubuntu 20.04.1 LTS on it, with the LVM encrypted partition option, and the installation went well.
After starting using Ubuntu, I had 2 problems:
1) Trivial boot with Dell logo remaining and not going forward. So forced to reboot manually to go through...
2) Then I tried with the Dell certified Ubuntu version 18.04 LTS for hardware, as stated here : https://certification.ubuntu.com/hardware/201902-26851
Among the updates proposed, I had the BIOS updated from 1.7.3 to latest version 1.9.1 => this seemed to solve booting problems !
3) But, now I have another problem : the PC is totally freezing without responding, IF I unplug the DOCK Thunderbolt power cable 0_0
In fact, the PC needs to be connected to Dock, otherwise it completely freezes after eta 5 min, not responding at all...
Is it a Hardware/Software issue ??
N.B. : Hardware info. https://linux-hardware.org/?probe=869749e656
Thanks for your feedback.
DELL-Cares
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October 21st, 2020 02:00
Thank you! We have received the required details. We will work towards a resolution via private messages to ensure the security of your information. In the meanwhile, you may receive assistance or suggestions from the community members as well.
mhabsaoui
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November 4th, 2020 06:00
Well, until now I have downgraded to the combo Ubuntu 18.04 LTS + BIOS 1.7.4 in order to work normally (even if it seems now the freezes occur after I plug in back the dock thunderbolt cable... instead of unplugging it)
So, is there any new BIOS > 1.9.1 version planned for release to fix such issues ??
Thanks !