| 27 Jan 2023 |
 @lily:lily.flowers | * So it seems the issue happens when fb0 switches from efifb to i915drmfb, which resets the fbcon on vtcon0 (presumably indicated by the log item kernel: Console: switching to colour frame buffer device 282x94). So depending on what events trigger the "change" event for vtconsoles, setting that udev rule with ACTION="add|change" could cause later setfonts to be overriden by the default vconsole settings
I'm trying a few kernel params to attempt to prevent the switches during initrd for further testing in confirming the cause
| 14:59:14 |
| @lily:lily.flowers | Yeah setting i915.fastboot=1 makes the problem go away and also reduces flickering during boot anyways so I'll probably keep that set | 15:08:01 |
| 28 Jan 2023 |
 @elvishjerricco:matrix.org | Anyone here using hibernation over LUKS with systemd initrd? | 19:32:48 |
| @elvishjerricco:matrix.org | https://github.com/NixOS/nixpkgs/issues/213122 | 19:32:53 |
| @elvishjerricco:matrix.org | I doubt this has anything to do with btrfs, but I wanted to know if anyone's had anything similar successfully working. I don't think it would be the use of swapfile instead of device either | 19:33:38 |
| @elvishjerricco:matrix.org | * I doubt this has anything to do with btrfs, and I wanted to know if anyone's had anything similar successfully working. I don't think it would be the use of swapfile instead of device either | 19:34:01 |
| @lily:lily.flowers | I've tested it and it does work on my system. But I don't really use it more than those few times because I was curious if it worked | 19:34:44 |
| @elvishjerricco:matrix.org | Was that over LUKS? | 19:34:52 |
| @lily:lily.flowers | Yes | 19:34:59 |
| @lily:lily.flowers | Swap lv in luks | 19:35:14 |
| @elvishjerricco:matrix.org | swap file or device? And I'm assuming systemd initrd? | 19:35:14 |
| @lily:lily.flowers | Device and yes | 19:35:25 |
| @elvishjerricco:matrix.org | ah, LV, not file | 19:35:26 |
| @elvishjerricco:matrix.org | cool | 19:35:32 |
| @elvishjerricco:matrix.org | so then maybe a swap file thing... | 19:35:44 |
| @lily:lily.flowers | I'll also take a look at the issue later. I'm busy atm but I thought I would confirm that it does work for me | 19:38:22 |
| @elvishjerricco:matrix.org | thanks | 19:38:34 |
| @elvishjerricco:matrix.org | Hm, this is actually going to be kind of hard to write a nixos test for, because we probably can't realistically know the resume_offset= value at eval time | 21:24:46 |
| @lily:lily.flowers | In reply to @elvishjerricco:matrix.org
Hm, this is actually going to be kind of hard to write a nixos test for, because we probably can't realistically know the resume_offset= value at eval time Could you make it so the initrd put the value in /sys/power/resume_offset before systemd does the resume handling? That way it's not on kernel cmdline and so not needed at eval time but you'd have to generate the initrd from within the VM then. Unless someone knows a clever trick to make it easier | 22:19:36 |
| @elvishjerricco:matrix.org | It'd have to be a little different than that | 22:20:47 |
| @elvishjerricco:matrix.org | because the file system containing the swap file isn't actually mounted | 22:20:59 |
| @elvishjerricco:matrix.org | so we can't ask btrfs where its offset is in initrd | 22:21:07 |
| @elvishjerricco:matrix.org | we'd have to save it somewhere that initrd can read it from | 22:21:23 |
| @lily:lily.flowers | I did not mean auto-magicking the value from initrd. I mean in a VM figure out the offset and build a new initrd with the number baked in | 22:22:16 |
| @lily:lily.flowers | In reply to @elvishjerricco:matrix.org
we'd have to save it somewhere that initrd can read it from But doing this could work too | 22:22:25 |
| @elvishjerricco:matrix.org | In reply to @lily:lily.flowers
I did not mean auto-magicking the value from initrd. I mean in a VM figure out the offset and build a new initrd with the number baked in Oh, well that would require IFD to read the output of the VM into a Nix expression | 22:23:01 |
| @lily:lily.flowers | In reply to @lily:lily.flowers
I did not mean auto-magicking the value from initrd. I mean in a VM figure out the offset and build a new initrd with the number baked in (A multi-stage test I suppose? Like the installer tests but less extreme) | 22:23:26 |
| @lily:lily.flowers | In reply to @elvishjerricco:matrix.org
Oh, well that would require IFD to read the output of the VM into a Nix expression Why? | 22:23:31 |
| @elvishjerricco:matrix.org | builtins.readFile (runCommand "foo" {} "echo hi > $out") is technically IFD. Or, rather, the same basic internal mechanism | 22:24:06 |
| @lily:lily.flowers | Nix doesn't need it. But your idea of saving it on another disk is better | 22:24:14 |
