Yes, I installed kernel-latest-qubes-vm as well, while still using 5.4.90-1 on dom0, and things ran smoothly without much problems, even after several restarts. I did what you suggested but nothing really happens. It turns out this is a bug of kernel 5.10.11-1.fc25.qubes.x86_64, which is being discussed here: https://github.com/QubesOS/qubes-issues/issues/6377 The bug will be probably fixed already in 5.10.12, the problem is that I don't see how I can install the upgrade if I cannot launch VMs.
What really puzzles me is that 5.10.11-1 somehow managed to break also 5.4.90-1.qubes.x86_64 and 5.4.91-1.fc25.qubes.x86_64. In any case, elaborating on your hints it turns out that using kernel 5.4.91-1 I can get a shell by doing Ctrl+Alt+F2. I am greeted by a message saying that X won't start, but at least I can login. Here I can launch VMs like vault, that have no device assigned (on kernel 5.10.11-1 I cannot launch anything). Still no hope for sys-net: It says "Unable to reset PCI device <number>: no FLR, PM reset or bus reset available, see /var/log/libvirt/libxl/libxl-driver.log for details". Following the suggestion, the log says "unable to add device with path <path>", and "libxl_devices_destroy failed for 5". ...If I manage to get internet running, I may download the new, patched kernel and hopefully be back with a functioning computer. Any clue as what may be the next steps here? On Thursday, February 4, 2021 at 10:15:01 PM UTC+1 rust...@net-c.com wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > Fabrizio Romano Genovese: > > In trying to make my wifi adapter working, I decided to try > `kernel-latest` > > on Dom0, which installed kernel `5.10.11-1.fc25.qubes.x86_64`. The > result > > is a system where I cannot start VMs (not even VMs with no devices > > connected to them) due to `libvirt` errors ( The kernel doesn't support > > reset from sysfs for PCI device ...). > > > > I tried to go back to my old kernels by changing `xen.cfg` in > > `/boot/efi/EFI/qubes` (here I have options 5.4.90-1.qubes.x86_64 and > > 5.4.91-1.fc25.qubes.x86_64, besides the one I mentioned above). The real > > big problem is that these kernels do not seem to appear to work anymore. > As > > soon as I change `default` in `xen.cgf` selecting one of these two > kernels, > > I am not able to access the system (after I insert the LUKS passphrase I > > get black screen in the authorization manager. Moreover, from boot > messages > > it seems that neither these kernel can start sys-net anymore). > > > > > > Any suggestion is really appreciated, I spent the last week configuring > my > > PC and I would literally break into tears if I had to re-do everything > from > > scratch. > > Did you also install kernel-latest-qubes-vm (in addition to > kernel-latest) in dom0? Then maybe that too happens to be somehow > broken on your system. > > If you can log in on a console (Ctrl-Alt-F2) *after* all your > autostart VMs have failed to start, check 'qubes-prefs default_kernel' > and try setting the VM kernel to another version - i.e. to one of the > directory names in /var/lib/qubes/vm-kernels/ - like this: > > qubes-prefs default_kernel 5.4.90-1 > qubes-prefs default_kernel 5.4.91-1.fc25 > > If you can't log in at all, you could mount the root filesystem from a > Qubes installer console and edit the 'default_kernel' property inside > var/lib/qubes/qubes.xml on the root filesystem mountpoint. > > Rusty > -----BEGIN PGP SIGNATURE----- > > iQKTBAEBCgB9FiEEhLWbz8YrEp/hsG0ERp149HqvKt8FAmAcY8ZfFIAAAAAALgAo > aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDg0 > QjU5QkNGQzYyQjEyOUZFMUIwNkQwNDQ2OUQ3OEY0N0FBRjJBREYACgkQRp149Hqv > Kt9qzQ//VGZZvcU0kmZc/0rphRHJL8Ds5NHqQcFE/tijIxFGin6as/3r/l0hRP5L > xYA7IXoVlPj/Q2r+Ub5JnPJUl2/0WeYSU40PFJMALCBbjM0Vs1LqE55WbuNu1xBt > 8uKlRKIxMfe+uJzFGjUBmNbV8elNCPpxMRHeAWG6iqvHfm/62RlEamKj+7xm1DTY > sOUJzbSFguHWd5P0e/orVpQfaYrfRGexwpLv7+LkM+aQ2i8pDgcnt+ueLtLYDS/F > yQVAd1PLEuxI5AxaKL4OFgDIT5X6EGSof3yayr7/CSCwPo9fMb2W/30ZOGa5+2J5 > Y2mXfUfnbZsCBCVolOKNZhVC7we0JxcfDElsJ8nWNHhrOq7vtIKm/Z0NUL2fw7Yu > LFHKgpRRXwnICRETfTWpaCE1mfYx0XA1h+PDxVCNQsn6Qt49Zm993ZGrk6pAS6Dt > 9zfDt2wB1qEIB0vd/6ao350B6eDkOB2JElldR6H/BXoFbv1m9h3YD7d8KazehpX5 > f2NdT4Zg+ZmJYw4sZbRPIYaYjlNBumJnkF+XyM2ZN/dzDfMe4oY8/AuqxBGeWHln > BTDgX19GwfMviPeTv6K+FsmcaykA48j4sdw/ns6ZVexJ57KgC4cExsKiIT31jHBL > vgzUALinx/QwtCfwl7XxL1TakJ9tQqLt42E0UTA6rPBVDXS/074= > =hqBL > -----END PGP SIGNATURE----- > > > -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/b8fd8aa8-3bf1-4efc-920f-b14b7ff6cccbn%40googlegroups.com.