Public bug reported: Under 20.10, my machine of 64GB had 8 zram devices of 2GB each. After the 21.04 upgrade, zram was still configured, but now with one 1 device of 256MB.
dpkg-reconfigure did not fix this purge and reinstall did not fix this. $ cat /proc/swaps Filename Type Size Used Priority /dev/zram0 partition 262140 0 100 $ lsblk -d | grep -e ^NAME -e disk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT zram0 252:0 0 256M 0 disk [SWAP] nvme0n1 259:0 0 953.9G 0 disk nvme1n1 259:4 0 931.5G 0 disk This is output from my system prior to upgrade (that is under 20.10) $ lsblk -d | grep -e ^NAME -e disk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOIN zram0 252:0 0 16M 0 disk [SWAP] zram1 252:1 0 2G 0 disk [SWAP] zram2 252:2 0 16M 0 disk [SWAP] zram3 252:3 0 2G 0 disk [SWAP] zram4 252:4 0 16M 0 disk [SWAP] zram5 252:5 0 2G 0 disk [SWAP] zram6 252:6 0 2G 0 disk [SWAP] zram7 252:7 0 16M 0 disk [SWAP] zram8 252:8 0 2G 0 disk [SWAP] zram9 252:9 0 16M 0 disk [SWAP] zram10 252:10 0 2G 0 disk [SWAP] zram11 252:11 0 16M 0 disk [SWAP] zram12 252:12 0 2G 0 disk [SWAP] zram13 252:13 0 2G 0 disk [SWAP] zram14 252:14 0 16M 0 disk [SWAP] zram15 252:15 0 2G 0 disk [SWAP] ProblemType: Bug DistroRelease: Ubuntu 21.04 Package: zram-config 0.6 ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12 Uname: Linux 5.11.0-16-generic x86_64 ApportVersion: 2.20.11-0ubuntu65 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Sat Apr 24 15:47:18 2021 Dependencies: InstallationDate: Installed on 2020-11-22 (152 days ago) InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022) PackageArchitecture: all SourcePackage: zram-config UpgradeStatus: Upgraded to hirsute on 2021-04-23 (0 days ago) ** Affects: zram-config (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug hirsute -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1925989 Title: after upgrade to 21.04, zram only 1 device of 256MB on 64 GB system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zram-config/+bug/1925989/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs