Aenye_Cerbin's questions

today I upgraded to Kubuntu 24.10 from 24.04. After the update I'm unable to boot to Windows 10 from GRUB, while it's still possible directly picking Windows Boot Manager from UEFI.

I've tried to relaunch sudo update-grub and got such results:

Sourcing file `/etc/default/grub'
Generating grub configuration file ...
Found theme: /boot/grub/themes/poly-dark-master/theme.txt
Found linux image: /boot/vmlinuz-6.11.0-8-generic
Found initrd image: /boot/initrd.img-6.11.0-8-generic
Warning: os-prober will be executed to detect other bootable partitions.
Its output will be used to detect bootable binaries on them and create new boot entries.
Error: invalid volume.
grub-probe: error: cannot find GRUB device for /dev/sdc1. Please check device.map.
Found Windows Boot Manager on /dev/nvme0n1p1@/efi/Microsoft/Boot/bootmgfw.efi
Found linux image: /boot/vmlinuz-6.11.0-8-generic
Found initrd image: /boot/initrd.img-6.11.0-8-generic
Found memtest86+ 64bit EFI image: /boot/memtest86+x64.efi
Warning: os-prober will be executed to detect other bootable partitions.
Its output will be used to detect bootable binaries on them and create new boot entries.
Error: invalid volume.
grub-probe: error: cannot find GRUB device for /dev/sdc1. Please check device.map.
Found Windows Boot Manager on /dev/nvme0n1p1@/efi/Microsoft/Boot/bootmgfw.efi
Adding boot menu entry for UEFI Firmware Settings ...
done

After reboot still same happens I just got: error, cannot load image and it returns to main GRUB menu, whats even strager I cannot then boot into kubuntu untill I restart the PC. It just begins to launch it and then returns to the main GRUB menu. After restart I can boot into Kubuntu just normally.

My grub config /boot/grub/grub.cfg here.

I'va Kubuntu and grub installed on /dev/sdb/, /dev/sdc/ is one of Windows striped disks. Windows is located on /dev/nvme0n1/.

I was asked for help with Opera installed on Ubuntu 24.04 via Snap not playing some videos. I've heard about the issue with ffmpeg version Opera uses, but thought it was about opera installed via APT. It's newest available version installed. It worked previously I also tried to reinstall chromium-ffmpeg snap and reverting opera Update. Nothing worked. I read a lot of posts about copying chromium version of ffmpeg, but these posts are old and if it's snap I cannot directly affected it. I do not know if it was a recent Ubuntu upgrade that make it stop working or the opera update. Have any of you had similar problems with Opera snap? Can you provide any solution?

EDIT: I've tried things mentioned by @Rinzwind Unfortunately it did not help. I've run the install script it completed but videos still not working. I've tried to manually download libffmpeg.so and copied it to this places:

/var/snap/opera/
/var/snap/opera/303/
/var/snap/opera/304/
/var/snap/opera/common/

/usr/lib/x86_64-linux-gnu/opera/

In opera I've checked opera://about and got such install path:
Install: /snap/opera/304/usr/lib/x86_64-linux-gnu/opera

And 304 is the newest and 303 is the older one that I also checked. I tried to copy libffmpeg.so to this install path and got such error:

sudo cp libffmpeg.so /snap/opera/304/usr/lib/x86_64-linux-gnu/opera/
cp: cannot create regular file '/snap/opera/304/usr/lib/x86_64-linux-gnu/opera/libffmpeg.so': Read-only file system

I got the libffmpeg.so from latest release.

What am I doing wrong?

I've a dual-boot with kUbuntu and Windows 10. I had a GRUB configuration made with Grub Customizer tool (auto boot after 10s, theme). And it worked really well. Today I updated Ubuntu from 23.04 to Ubuntu 23.10. During update I decided to keep my current GRUB profile. After update the entries of Ubuntu are completely missing. I've old settings (theme, and so on) and rest of the entries (Windows, Memtest and UEFI), but Ubuntu entry and Ubuntu Advanced Options are missing. It's the first time it happened to me and I've been using such dual-boot config (made with Grub Customizer) on multiple computers for some years. What happened and how can I fix it?

I can go to GRUB's CLI and can boot to Windows, but I have no idea how can I access Ubuntu to try doing something like update-grub. Can I fix it using this GRUB's CLI or Live USB?

EDIT: Some information about my setup and what I've tried. I got Windows installed on nvme0 and got efi partition there with Windows Boot Manager. (I usually do not overwrite it but install grub elsewhere to be able in case of somethink to simply choose to boot Windows Boot Manager). I got kUbuntu installed on sda and did not manually created the efi partition. Got there only sda1 - wpar and sda2 - linux filesystem (which has /boot and /boot/efi dirs and). I mounted sda2 in /mnt using liveUSB and chroot into it. I was able to run update-grub but it only found the entries I already have (Windows, Memtest, UEFI) and not Ubuntu. I've tried to reinstall grub there. But grub-install returned an error that it cannot find efi partition and when I pointed /mnt/boot/efi as efi-path and got another error that this is not a valid efi partition. Have anyone some ideas how can I reinstall it?

Hollo, I am not sure I've written correct title, but it's not easy to name problem in few words (especially for non-native English speaker), so be forgiving please.

I've two monitors connected to my computer:

1. in front of me, connected via HDMI, set as primary
2. on the right, connected via DVI-D, set as secondary

I've configured it as I want and it's working until I reboot the PC, then the monitors configuration is resseting, but only on lock screen. Lock screen appears on 2nd monitor, and the system behaves like the 2nd monitor was on the left not right (mouse behavior). After login the configuration returns to that I've setted. What curious, after log off (but without rebooting) Lock Screen appears on correct monitor (1st), and mouse moves over two monitors correctly).

I have:

Graphics: Nvidia Geforce GTX 1070 (one from Gigabyte) Mobo: ASUS X370 Prime-Pro (I don't know if it's useful)

I've read that in Nvidia drivers there is fixed hardcoded priority of outputs, I don't know if it's true, nor if it can have anything to do with the problem I have. It's DualBoot and on Windows 10 (1909) lock screen appears to work properly.

Does anyone have similar problem, or know any solution to this? It's not really important issue, but it's quite annoying... Thanks in advance.