** Description changed: Since around introduction of Kernel 6.8 to Daily builds, installation of Kubuntu / Ubuntu / Ubuntu-Mate builds randomly hangs(mostly), crashes or fails on systems with less than 3GB of RAM. When the system hangs, VM indicates heavy CPU and CDROM usage. My bet is on Kernel killing itself trying to "juggle" data between OverlayFS and Filesystem cache without a way to swap-out since someone decided that removing zram-config from livefs was a good idea. When the system doesn't hang, I can see kernel OOM killing random processes like calamares, cryptsetup etc. I had 100% success of installing Kubuntu 24.04 daily on VMs with 3GB, 75% with 2.5GB and almost 0% on 2GB VMs. Lvecd installers prior to Linux 6.8 had no issues with 2GB VMs. Once the system is installed it functions satisfactory with 2GB. I believe adding zram-config to livefs/casper would allow installation on systems with only 2GB of RAM. Tested over a couple of months with many snapshots of 24.04 Daily builds for Ubuntu, Kubutu and Ubuntu-Mate on VirtualBox and KVM/Qemu with default settings except enabled EFI. PS, The issue is not unique to calamares but I am filing it here since that's what I was asked to do by people on #kubuntu-devel and to be honest at the moment I don't care about anything but being able to test Kubuntu images on small VMs. + + P.P.S + Specific example #1 (bad): + * Kubuntu snapshot from http://cdimage.ubuntu.com/kubuntu/daily-live/20240418.1/ + * VirtualBox 7.1.16 - VM - Default Ubuntu Profile, Enable EFI, Adjust RAM to 2.5GB + * Boot LiveCD, Choose Try option + * Start Install with default settings + * Observe Calamares existing mid install without any visual indication + * Logs show OOM-Killer killing cryptsetup and Calamares + + Specific example #2 (Good): + * Kubuntu snapshot from http://cdimage.ubuntu.com/kubuntu/daily-live/20240418.1/ + * VirtualBox 7.1.16 - VM - Default Ubuntu Profile, Enable EFI, Adjust RAM to 2.5GB + * Boot LiveCD, Choose Try option + * >> Install zram-config, start zram-config service << + * Start Install with default settings + * Observe Calamares finishing install
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2062428 Title: Kubuntu 24.04 daily builds - Install randomly hangs/fails/crashes on systems with less than ~3GB of RAM To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calamares-settings-ubuntu/+bug/2062428/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
