/srv/irclogs.ubuntu.com/2016/05/14/#ubuntu-devel.txt

* teward turns his attention back to diagnosing his postfix install00:00
infinityteward: debootstrap should be working now.00:26
tewardinfinity: checking00:27
infinityMan, I hate it when that happens.00:50
infinityI just asked "who's the idiot who made nova-compute-kvm depend on qemu-system?"00:51
infinityChecked the changelog.00:51
infinityThe idiot was me.00:51
tewardinfinity: heh00:55
tewardinfinity: looks like it works now00:55
tewardthanks00:55
infinityrharper: Oh, so you did prep a version with Breaks, but never got it uploaded?  Fun.01:05
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Bluefoxicyany reason linux-signed-image doesn't provide linux-image ?17:15
Bluefoxicyif you remove linux-image-4.4.0-22-generic when you have linux-signed-image-4.4.0-22-generic, apt wants to remove linux-image-generic-4.4.0-22-extras and all other stuff that requires linux-image-4.4.0-22-generic17:16
Bluefoxicy(for that matter, why have unsigned images at all?)17:17
dobeyBluefoxicy: do you not have "linux-signed-generic" installed?17:42
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infinityBluefoxicy: linux-signed-image-4.4.0-22-generic only contains the signed image, none of the modules.18:04
infinityBluefoxicy: (In fact, it really only contains the signature)18:04
infinityBluefoxicy: Which is why signed depends on image.18:05
infinityBluefoxicy: dpkg -L linux-image-4.4.0-22-generic versus dpkg -L linux-signed-image-4.4.0-22-generic would probably have answered your question.18:06
Bluefoxicyah18:08
Bluefoxicyinfinity:  I was just looking in boot, re18:09
Bluefoxicy-rw------- 1 root root 6.7M May  5 15:03 vmlinuz-4.4.0-22-generic18:09
Bluefoxicy-rw------- 1 root root 6.7M May 14 14:08 vmlinuz-4.4.0-22-generic.efi.signed18:09
infinityBluefoxicy: Yeah, vmlinuz-4.4.0-22-generic.efi.signed is the combination of vmlinuz-4.4.0-22-generic and the detached signature shipped by -signed.18:11
BluefoxicyI'm guessing grub just automatically uses the signed image if present?  Doesn't seem to get its own menu entry.18:12
infinityBluefoxicy: update-grub goes looking for it and prefers it.  I have no boot entries for unsigned.18:12
Bluefoxicy'grep signed /boot/grub/grub.cfg' returns nothing after update-grub18:14
Bluefoxicy(aside:  optionally selecting a signed kernel doesn't seem to provide any security if your rootkit can just tell grub to boot an unsigned kernel)18:15
infinityBluefoxicy: Are you booting on an efi system?18:15
infinity(base)root@nosferatu:/etc/grub.d# grep signed *18:16
infinity10_linux:  if test -d /sys/firmware/efi && test -e "${linux}.efi.signed"; then18:16
infinity10_linux:linux${rel_dirname}/${basename}.efi.signed root=${linux_root_device_thisversion} ro ${args}18:16
infinity10_linux:    *.efi.signed)18:16
Bluefoxicylooks like I'm not18:16
infinityThat's the logic.  It should Just Work if you're EFI.  If you're not, the signed kernel is useless.18:16
Bluefoxicyah18:16
BluefoxicyI can probably convert this system to efi.  LAst time I did that it took black magic.18:17
Bluefoxicythanks for the info18:17
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