Public bug reported:
On a HP Proliant DL165 G7 I upgraded from 14.04.3 LTS to 16.04 LTS (I
know, not supported).
After reboot, the new kernel was loaded by GRUB, but failed to find the
disks installed in the system (setup working for almost 2 years,
standard HP setup with the SATA controller in AHCI mode and AHCI enabled
during BIOS). It then dropped to a shell in initramfs, after hundreds
(thousands?) of identical errors:
[...] AMD-Vi: Event Logged [IO_PAGE_FAULT] device=xxx adress=yyy
flags=0x...
and the final error messages:
ata3: softreset failed (1st FIS failed)
ata4: softreset failed (1st FIS failed)
ata3: limiting SATA link speed to 1.5 Gbps
ata3: softreset failed (1st FIS failed)
ata4: limiting SATA link speed to 1.5 Gbps
ata4: softreset failed (1st FIS failed)
ata3: reset failed, giving up
ata4: reset failed, giving up
The system disks are on ata1 and ata2, though.
I tried booting the system from different other 16.04 boot media
(ubuntu-16.04-server-amd64.iso, ubuntu-16.04-desktop-amd64.iso) into a rescue
system. I also got the
[...] AMD-Vi: Event Logged ... messages. When the rescue shell was running, the
system disks were also not detected, the installer I started as an experiment
only offered the (USB disk) boot medium itself as installation target. The
desktop installer and kernel then crashed with error messages about squashfs
(sorry, didn't record those).
Without any change, the same system boots without issues from a 14.04
boot image, all disks present. Also, the 16.04 system boots fine if the
old 3.13.0-86 kernel is selected in the GRUB menu.
After some fiddling around, I turned off the IOMMU in the server's BIOS
(under PCiExpress) - and all went back to normal, without any change on
the installed system. Kernel 4.4.0-22-generic now boots just fine from
the LVM-Root.
So this is WORKSFORME now, but maybe somebody should look into it. I do
believe that Proliants are quite common out there. If needed, I'll
provide more info if possible - but currently I wouldn't know what.
** Affects: ubuntu
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1582858
Title:
kernel 4.4.0-22-generic in 16.04 sees no disks on HP Proliant DL165 G7
if IOMMU is enabled
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+bug/1582858/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
