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Message #03789
[Bug 2107477] Re: [SRU] Display broken in initramfs on ARM64 laptops
Updated initramfs-tools from Ubuntu 25.04, yet still not fixed for me.
I'm using Lenovo Yoga Slim 7x.
varun@varun-yoga:~$ apt-cache policy initramfs-tools
initramfs-tools:
Installed: 0.147ubuntu1.1
Candidate: 0.147ubuntu1.1
Version table:
*** 0.147ubuntu1.1 500 (phased 20%)
500 http://ports.ubuntu.com/ubuntu-ports plucky-updates/main arm64 Packages
100 /var/lib/dpkg/status
0.147ubuntu1.0+x1e0 500
500 https://ppa.launchpadcontent.net/ubuntu-concept/x1e/ubuntu plucky/main arm64 Packages
0.147ubuntu1 500
500 http://ports.ubuntu.com/ubuntu-ports plucky/main arm64 Packages
With concept kernels, still get a blank screen. With Glathe's
6.16.0-rc4-jg-0-qcom-x1e kernel get a text prompt for encryption
password as before.
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https://bugs.launchpad.net/bugs/2107477
Title:
[SRU] Display broken in initramfs on ARM64 laptops
Status in dracut package in Ubuntu:
Fix Released
Status in initramfs-tools package in Ubuntu:
Fix Released
Status in dracut source package in Plucky:
New
Status in initramfs-tools source package in Plucky:
Fix Released
Bug description:
[ Impact ]
On affected hardware, the display only works after the initramfs.
This means there is no visible input field if disk encryption was selected in the installer.
The same of course applies for any other output during the initramfs.
[ Test Plan ]
To reproduce the issue, install an affected machine with disk encryption or add break= to the kernel command line to get an interactive initramfs shell.
With the bug present the screen stays dark. It might still be possible to enter
the passphrase blindly or exit the debug shell. After modules are loaded from the root file system the screen should start working.
With the patch applied there should be visible output for the password
or shell prompt in the initramfs.
[ Where problems could occur ]
The fix should only include additional modules, we should make sure
not to accidentally drop any functionality in the process.
[ Other Info ]
Since dracut and initramfs-tools behave similar enough the same test
plan should apply to both. Both are already fixed in questing and
there is positive test feedback from users in discourse
https://discourse.ubuntu.com/t/faq-ubuntu-25-04-on-snapdragon-x-
elite/61016/18
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