Part of the DRM is that it's going to insist on a secure path to the display. It has the video decrypted in the gpu and sent directly to a secured HDMI port.
Now whatever you do, don't go out and buy a cheap chinese HDMI-> USB 3 adapter that lies about its secure status...
I have to remember to use tldr, one of these days. Some manpages get so lost in the pedantry of covering everything that the 99 percentile stuff is buried.
I've done pretty much that, by way of debootstrap. It's a fun way to set up a system.
I think that live-task-non-free-firmware-pc (gotta have the nonfree apt.sources tho), linux-image-amd64, sudo, and systemd-timesyncd are just enough to get started. Then add gdm3(which pulls in a bunch of gnome), and a terminal (I like kitty & ptyxis).
I think the problem with xournal is that it cannot ask a file portal to give it access to two related files at once. "I want to let the user pick foo.pdf.xournal, and also give me access to foo.pdf". So the next best thing is to give it the "access any damned file" permission, and let Xournal grab whatever it wants. You get the same problem with video players - you could take away their permission to open-any-file, but then they won't be able to pick up a related subtitle file.
Localsend only does files/pictures/a quickie bit of text, but I find it more convenient and reliable than kdeconnect. Localsend's iphone app is in better shape too, if you need that.
640x480 sounds like the typical fallback if there is no EDID/DDC data and the card is going ahead with the most bare-minimum signal that any screen should accept. Maybe there's dumb state sitting around in the video card. Maybe, because everything is now so smart that it's stupid, the monitor itself is the one remembering weird state. Maybe it doesn't like the text-mode flip or a DPMS command at the end of an update-reboot cycle, so its EDID responder loses the plot. Who the fuck knows what goes on in all this garbage firmware?
Linux bootloaders discover the correct linux volume by UUID (which is in the filesystem), or PARTUUID (which is in the GPT table). It'll look at every drive, and when it sees the matching one it'll look in that partition, find the kernel & initrd, suck them into ram, and launch the kernel.
The main problem with moving drives around is - where is the EFI firmware looking for the bootloader in the first place? If you read efibootmgr, the efi data is pretty simple and very much tied to a hardware port. The EFI takes the most preferred bootloader entry, goes to that drive, and runs a file like "\EFI\grub\grubx64.efi". If that file isn't right there, the EFI isn't going to look elsewhere for it.
There is one bootloader name that EFI will pluck out of the blue and (smash the Fx key) offer to you as a boot option - "\EFI\BOOT\BOOTX64.EFI". Self booting usb installers use that, but you could use it too. Put all the other files that go along with the bootloader in with that boot folder, and rename the appropriate .efi to bootx64.efi.
One thing that I've done on odd setups is to put rEFInd on the efi partition as the boot\bootx64.efi loader. It'll do a pretty fancy job of detecting what's bootable (may need an additional filesystem_driver.efi), or even chain into grub to finish the startup.
rotopenguin @ rotopenguin @infosec.pub Posts 0Comments 614Joined 2 yr. ago