from:"Toby"

[Bug 1943043] Re: Multiple CPUs stuck at 100% usage

2021-09-08 Thread Toby Milne

Looks very similar to bug #1932586

https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1932586

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Title:
  Multiple CPUs stuck at 100% usage

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[Bug 1943043] [NEW] Multiple CPUs stuck at 100% usage

2021-09-08 Thread Toby Milne

Public bug reported:

System boots fine, but after several hours, a random process will consume 100% 
CPU (all kernel time), if the pi is left on longer, this will happen to more 
cpus.
At the same time the interrupt count for "fe00b880.mailbox" drops dramatically.
Kernel stacktrace seems to point to an exception happening in scheduling:

[<0>] __switch_to+0xb8/0xe4
[<0>] function_trace+0x98/0x98
[<0>] do_translation_fault+0x64/0x9c
[<0>] do_mem_abort+0x4c/0xbc
[<0>] el1_abort+0x74/0xf4
[<0>] el1_sync_handler+0xac/0xcc
[<0>] el1_sync+0x7c/0x100
[<0>] schedule_tail+0x130/0x200
[<0>] ret_from_fork+0x4/0x3c

System is booting from NFS over the build in ethernet - so its going to
have a lot of NIC traffic.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: linux-image-5.11.0-1016-raspi 5.11.0-1016.17
ProcVersionSignature: Ubuntu 5.11.0-1016.17-raspi 5.11.22
Uname: Linux 5.11.0-1016-raspi aarch64
ApportVersion: 2.20.11-0ubuntu65.1
Architecture: arm64
CasperMD5CheckResult: unknown
Date: Wed Sep  8 13:30:28 2021
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=C.UTF-8
 SHELL=/bin/bash
RebootRequiredPkgs:
 linux-image-5.11.0-1017-raspi
 linux-base
SourcePackage: linux-raspi
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.default.apport:
 # set this to 0 to disable apport, or to 1 to enable it
 # you can temporarily override this with
 # sudo service apport start force_start=1
 enabled=0
mtime.conffile..etc.default.apport: 2021-07-15T11:07:35.169244

** Affects: linux-raspi (Ubuntu)
 Importance: Undecided
 Status: New


** Tags: apport-bug arm64 hirsute uec-images

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Title:
  Multiple CPUs stuck at 100% usage

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[Bug 597070] Re: Imac Radeon HD 4850 switch "Mini Display Port" output during install resulting black screen

2021-03-22 Thread Toby

I am in the exact same position as Peter T Hayward (energonic). I appreciate 
that this has been marked as fixed, but how can I go about implementing the fix?
Thank you

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Title:
  Imac Radeon HD 4850 switch "Mini Display Port" output during install
  resulting black screen

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[Bug 1889548] Re: ssh using gssapi will enforce FILE: credentials cache

2020-08-26 Thread Toby Blake

Hi there,

I'm afraid I haven't had much time to look properly into this recently,
but it remains on my list.

In the meantime, I've submitted an enhancement request upstream:

https://bugzilla.mindrot.org/show_bug.cgi?id=3203

Cheers
Toby


** Bug watch added: OpenSSH Portable Bugzilla #3203
   https://bugzilla.mindrot.org/show_bug.cgi?id=3203

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Title:
  ssh using gssapi will enforce FILE: credentials cache

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[Bug 1889548] Re: ssh using gssapi will enforce FILE: credentials cache

2020-08-10 Thread Toby Blake

Hi Christian,

Again, thanks for the above.

https://bugzilla.mindrot.org/show_bug.cgi?id=2775, in particular, looks
interesting, as it seems to be an attempt to bring the relevant ccache
patches up to date for version 8.  e.g. we have been patching our SL
systems additionally for
https://bugzilla.redhat.com/show_bug.cgi?id=1199363.

I'll give this a try and report back.  I'll hold off on reporting this
as a bug upstream until I've tried the patch(es).

Cheers
Toby


** Bug watch added: Red Hat Bugzilla #1199363
   https://bugzilla.redhat.com/show_bug.cgi?id=1199363

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Title:
  ssh using gssapi will enforce FILE: credentials cache

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[Bug 1889548] Re: ssh using gssapi will enforce FILE: credentials cache

2020-08-06 Thread Toby Blake

Hi Christian,

Thanks for your reply (and for the links).  I agree that a configurable
option coming from upstream would be the preferred option.  I'll submit
a bug upstream accordingly and note the ID here.

I note there's a patch referenced in the openssh mailing list link,
unfortunately the link is a 404 - I'll see if I can track it down via
other means.  On this topic, we've been using ssh on scientific linux
for a number of years now and that is patched to use the default ccache
name.  It would be interesting to see if it's the same or similar as the
404 patch above.

Depending on the outcome of my upstream bug report, I'll see if I can
port any patches we use to the current ubuntu/upstream code base.

As to your final question re: regression - I don't think so, looking at
the code, but we are only now in the process of converting desktop
machines to ubuntu.

Cheers
Toby

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Title:
  ssh using gssapi will enforce FILE: credentials cache

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[Bug 1889548] [NEW] ssh using gssapi will enforce FILE: credentials cache

2020-07-30 Thread Toby Blake

Public bug reported:

Hi,

ssh connections from a client with the following in ssh_config...

GSSAPIAuthentication yes
GSSAPIDelegateCredentials yes

... to an ubuntu 20.04 machine result in KRB5CCNAME being set to
'FILE:/tmp/krb5cc_[uid]_[random]' despite the following in
/etc/krb5.conf:

[libdefaults]
 ...
 default_ccache_name = KEYRING:persistent:%{uid}

This means that we cannot enforce a policy to use KEYRING ccaches across
our systems.  Authentications which go via the pam stack (e.g. login to
the machine at the console or over ssh using a password) can be
configured to use a KEYRING ccache, via libpam-krb5 settings in
/etc/krb5.conf.

The FILE: setting seems to be hard-coded in the openssh code (auth-
krb5.c).  It would be great if ssh(gssapi-with-mic) connections either
(a) set KRB5CCNAME to the default_ccache_name value, if set in
/etc/krb5.conf, or (b) didn't set KRB5CCNAME at all, so the system
default is used.

Many thanks
Toby Blake
School of Informatics
University of Edinburgh

** Affects: openssh (Ubuntu)
 Importance: Undecided
 Status: New

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  ssh using gssapi will enforce FILE: credentials cache

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[Bug 1605813] Re: lock screen freezes while trying to wake from suspend

2020-04-25 Thread Toby Dimmick

I'm experiencing this again, now without AC power (I think that was a
red herring).

It seems to be if I:
- Reboot
- Close the lid (which suspends the machine)
- Reopen the list

I've also noticed that certain things still render. If I plug/unplug the
AC adapter, I will continue to see "battery charging/discharging"
notification popups.

Additionally, I had a log file open on the screen in VS Code. I changed
the contents of this file from ctrl-alt-f1 virtual console, then
switched back to my graphical session, and the displayed text in VS Code
updated!

But I still could not interact with anything on-screen, beyond moving
the mouse (no mouseover animations, nothing happens when clicking with
touchpad or mouse, no keyboard response).

Attached dmesg output - session suspend/wake is the last ~60 lines.

** Attachment added: "dmesg output"
   
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1605813/+attachment/5360248/+files/dmesg-session-frozen

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Title:
  lock screen freezes while trying to wake from suspend

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[Bug 1605813] Re: lock screen freezes while trying to wake from suspend

2020-04-25 Thread Toby Dimmick

I've just experienced this problem (or very similar) on a fresh install
of Xubuntu 20.04, on a Thinkpad x240.

On wake, I could move the mouse, and switch to a virtual console with
ctrl-alt-f1. The session would sometimes animate for a moment (e.g. a
notification about change in wifi), before freezing completely (except
for mouse).

I did not try killing/restarting any sessions.

This happened both when selecting sleep then pressing the power button
to wake, and when sleeping by closing the laptop lid and opening to
wake. The laptop was plugged into AC power the entire time.

The problem persisted across reboots, but stopped occurring (seemingly)
when I rebooted, then unplugged the laptop from AC power. I can now wake
successfully with the laptop both plugged and unplugged. Haven't tried
rebooting again since. I have no proprietary drivers installed.

`sudo lshw -C display`:
*-display
description: VGA compatible controller
product: Haswell-ULT Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@:00:02.0
version: 0b
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:50 memory:e000-e03f memory:c000-dfff
ioport:3000(size=64) memory:c-d

Attached config files, which might contain relevant power manager
settings.

** Attachment added: "The contents of ~/.config/xfce4/xfconf"

https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1605813/+attachment/5360220/+files/xfconf.tar.gz

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Title:
lock screen freezes while trying to wake from suspend

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[Bug 1830930] Re: USB 3 devices are not detected on thunderbolt 3

2019-06-15 Thread Toby Broom

It's the same in windows so must be a hardware problem with HP.

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Title:
  USB 3 devices are not detected on thunderbolt 3

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[Bug 1830930] Re: USB 3 devices are not detected on thunderbolt 3

2019-06-15 Thread Toby Broom

Looks like hardware issue.

** Changed in: linux (Ubuntu)
   Status: Confirmed => Invalid

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Title:
  USB 3 devices are not detected on thunderbolt 3

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[Bug 1830930] Re: USB 3 devices are not detected on thunderbolt 3

2019-06-13 Thread Toby Broom

I got a different USB 3.1 SSD and this works fine so it seems a real
edge case that Samsung SSD does not work on this TB controller.  I can
test with windows soon

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  USB 3 devices are not detected on thunderbolt 3

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