Ubuntu
linux-source-2.6.15 package

linux-image-2.6.12-8-amd64-xeon hangs at hotplug start when booting Dell PowerEdge 2850

Bug #22004 reported by Zds on 2005-09-19

Affects		Status	Importance	Assigned to	Milestone
	linux-source-2.6.15 (Ubuntu)	Invalid	Medium	Ben Collins

Bug Description

Package: linux-image-2.6.12-8-amd64-xeon
Version: 2.6.12-8.13
Severity: important

I have installed Ubuntu Breezy on Dell PowerEdge 2850. With
linux-image-2.6.12-8-amd64-generic it boots fine, but when using
linux-image-2.6.12-8-amd64-xeon, it hangs on boot when initializing
hotplug.

I traced it to /proc/bus/usb/devices. Just saying "cat" is enough to
hang the process (in this case, cat) and it does not die even with kill -9.

I then compiled kernel using -general as a base config and changed it to
be compiled to Intel platform and enabled SMP and hyperthreading - works
fine.

Hardware I am using:
-Dell PowerEdge 2850, no USB external devices
-2 Intel Xeon 3.2G processors
-hardware RAID with 2 Seagate 73G 10krpm disks
-6Gb of memory

-- System Information:
Debian Release: testing/unstable
APT prefers breezy-updates
APT policy: (500, 'breezy-updates'), (500, 'breezy-security'), (500,
'breezy')
Architecture: amd64 (x86_64)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.12-8-zds-xeon-smp-20050919b
Locale: LANG=fi_FI.UTF-8, LC_CTYPE=fi_FI.UTF-8 (charmap=UTF-8)

Versions of packages linux-image-2.6.12-8-amd64-xeon depends on:
ii coreutils [fileutils] 5.2.1-2ubuntu2 The GNU core utilities
ii initramfs-tools 0.25 tools for generating an
initramfs
ii module-init-tools 3.2-pre7-0ubuntu3 tools for managing Linux
kernel mo

linux-image-2.6.12-8-amd64-xeon recommends no packages.

-- no debconf information

Revision history for this message

Žygimantas Beručka (zygis) wrote on 2005-10-09:

There's plenty of such bug reports in bugzilla. I've had the same with Oct 6 CD
image with 2.6.12-9 on x86. It's damn buggy kernel. I've updated to vanilla
2.6.13.3 and it works perfectly. I think it's due to unloadable modules, since
on certain modules modprobe hanged.

2.6.13.3 has many fixes for broken things in 2.6.12-9. Consider providing
2.6.13.3 in breezy as an alternate download, since it really fixes many problems
that n00b might face on first boot.

Revision history for this message

Ben Collins (ben-collins) wrote on 2005-12-11:

If possible, please upgrade to Dapper's 2.6.15-7 kernel. If you do not want to
upgrade to Dapper, then you can also wait for the Dapper Flight 2 CD's, which
are due out within the next few days.

Let me know if this bug still exists with this kernel.

Revision history for this message

Carthik Sharma (carthik) wrote on 2006-04-12:

Thank you for reporting this bug and following up on it.

I am marking this bug Closed since there has been no response from you for over three months. We
would like to fix all existing issues, but need need feedback to help with debugging.

Should you still have a problem with the latest up to date Dapper kernel and packages, please reopen this bug. In this case, please answer the questions that have already been asked of you before and provide the log files and information required for debugging.

Changed in linux-source-2.6.15:
status:	Needs Info → Rejected

Revision history for this message

Zds (zds) wrote on 2006-05-02: Re: [Bug 22004] Re: linux-image-2.6.12-8-amd64-xeon hangs at hotplug start when booting Dell PowerEdge 2850

Carthik Sharma wrote:
> Thank you for reporting this bug and following up on it.
>
> I am marking this bug Closed since there has been no response from you for over three months. We
> would like to fix all existing issues, but need need feedback to help with debugging.
>
> Should you still have a problem with the latest up to date Dapper kernel and packages, please reopen this bug. In this case, please answer the questions that have already been asked of you before and provide the log files and information required for debugging.

Unfortunately the Xeon machines I had this problem with were taken into
production use before I got this additional information and I couldn't
find anyone else with 64 bit Xeon machine to test this. I think we can
consider this resolved; I will reopen it if Dapper does not work either
when I get next batch of Xeon servers to install.