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ttmdear avatar Ubuntu

Dell Latitude 5420 i7-1185G7 problem with installation

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ttmdear

A few days ago I bought a Dell Latitude 5420 i7-1185G7 Iris Xe Graphics. I have a problem with Ubuntu desktop installation.

Firstly I tried to install version 21.04. I prepared bootable USB storage with etcher. I plugged the USB, then ran the PC, pressed F12 and changed boot to boot from USB storage. The GRUB showed up quite quickly and then I selected to run Ubuntu. The process of starting the system is quite long but finally the ubuntu properly started from pendrive. I live mode and generally everything works well. So I started installation which also went well. After installing a reboot system, plugged out the pendrive and waited. Generally nothing happens. I see only the Dell logo and that’s all. After a long time the system goes into emergency mode. So It’s strange that with live mode everything works. After installation it’s broken.

With version 20.04 LTS I have the same situation. Only version 18.04 LTS works well. I mean that the booting process went fast, installation without problems and the system works. But it looks like Ubuntu doesn’t support HDMI, screen bright options, and probably others thinks. I read that it lacks support for Intel Iris Xe Graphics.

Please help me. I spent a lot of hours installing and trying different things. But nothing work.

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oldfred
Have you updated UEFI & SSD firmware? With that new chip, I have seen users install 21.04, but not 20.04. Squeezing More Performance Out Of Intel Tiger Lake Xe Graphics By Using Mesa Git 21.04 https://www.phoronix.com/scan.php?page=news_item&px=TGL-Xe-Graphics-More-Mesa-Git Gen12 Xe Graphics might not be working out-of-the-box depending upon your kernel. Install OEM kernel https://forums.linuxmint.com/viewtopic.php?p=2002372&sid=7eab49285b06a0cda51c4ed7ace61615#p2002372 Dell Vostro 5502 laptop (intel 11th Gen Intel® Core™ i5-1135G7 https://ubuntuforums.org/showthread.php?t=2463979
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