USB keyboards no longer working after upgrade

I've found myself in a bit of a confused state. I upgraded a machine from Ubuntu 12.04 LTS to 14.04 LTS, and have now lost USB keyboard input. (And possibly lost other USB input devices, but I can't tell as it boots to textmode console only) Keyboards work in BIOS and at the Grub prompt, but not after the kernel has booted. The machine was previously running the 14.04 kernel, so that hasn't actually changed. If I boot the machine with a USB key running a fresh version of Ubuntu 14.04, the keyboard works fine too. I've tried several keyboards, and every combination of USB-related option in the BIOS to no avail. I assume that somewhere in the past couple of years, I've modified something on this machine which is now conflicting with something that's been upgraded.. but I have no idea what. I can get at the filesystem to edit things via the bootable USB version of Ubuntu. Any ideas of what to try? Cheers, Toby

Ah, I think I've spotted a very likely cause of the problem -- the upgrade downloaded a few .deb packages that were totally borked.. During the upgrade it mentioned that samba had failed to install properly but continued.. I didn't think anything else had failed. But looking around inside a chroot, I see that actually hundreds of packages haven't been installed or configured. Let's see how things go after I fix those.. On 10 June 2014 22:45, Toby Corkindale <toby@dryft.net> wrote:
I've found myself in a bit of a confused state. I upgraded a machine from Ubuntu 12.04 LTS to 14.04 LTS, and have now lost USB keyboard input. (And possibly lost other USB input devices, but I can't tell as it boots to textmode console only) Keyboards work in BIOS and at the Grub prompt, but not after the kernel has booted.
The machine was previously running the 14.04 kernel, so that hasn't actually changed. If I boot the machine with a USB key running a fresh version of Ubuntu 14.04, the keyboard works fine too. I've tried several keyboards, and every combination of USB-related option in the BIOS to no avail.
I assume that somewhere in the past couple of years, I've modified something on this machine which is now conflicting with something that's been upgraded.. but I have no idea what. I can get at the filesystem to edit things via the bootable USB version of Ubuntu. Any ideas of what to try?
Cheers, Toby
-- Turning and turning in the widening gyre The falcon cannot hear the falconer Things fall apart; the center cannot hold Mere anarchy is loosed upon the world

Yep, that sorted it out. USB functioning fine again. That was a rather annoying side effect though! I still don't understand what was actually *missing* to cause that. On 10 June 2014 23:33, Toby Corkindale <toby@dryft.net> wrote:
Ah, I think I've spotted a very likely cause of the problem -- the upgrade downloaded a few .deb packages that were totally borked.. During the upgrade it mentioned that samba had failed to install properly but continued.. I didn't think anything else had failed. But looking around inside a chroot, I see that actually hundreds of packages haven't been installed or configured. Let's see how things go after I fix those..
On 10 June 2014 22:45, Toby Corkindale <toby@dryft.net> wrote:
I've found myself in a bit of a confused state. I upgraded a machine from Ubuntu 12.04 LTS to 14.04 LTS, and have now lost USB keyboard input. (And possibly lost other USB input devices, but I can't tell as it boots to textmode console only) Keyboards work in BIOS and at the Grub prompt, but not after the kernel has booted.
The machine was previously running the 14.04 kernel, so that hasn't actually changed. If I boot the machine with a USB key running a fresh version of Ubuntu 14.04, the keyboard works fine too. I've tried several keyboards, and every combination of USB-related option in the BIOS to no avail.
I assume that somewhere in the past couple of years, I've modified something on this machine which is now conflicting with something that's been upgraded.. but I have no idea what. I can get at the filesystem to edit things via the bootable USB version of Ubuntu. Any ideas of what to try?
Cheers, Toby
-- Turning and turning in the widening gyre The falcon cannot hear the falconer Things fall apart; the center cannot hold Mere anarchy is loosed upon the world
-- Turning and turning in the widening gyre The falcon cannot hear the falconer Things fall apart; the center cannot hold Mere anarchy is loosed upon the world
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Toby Corkindale