Input freeze on udev update while on Live CD

Bug #497512 reported by eiver on 2009-12-16
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Linux Mint
Fix Released
Clement Lefebvre

Bug Description

Ok. I have gathered much more data so I redesigned this bug report. (Ruled out nvidia drivers, gdm and all but 1 updates)

System Version: Linux Mint 8 Helena x64
Hardware: Asus S96S, GeForce 8600m GS, 2 GB ram, Intel Core 2 Duo T7300

To reproduce:
1. Boot from LM8 live CD
2. Use mintUpdate to apply just 1 update: udev (147~-6 -> 147~6.1)
3. Log out

- All keyboard and mouse input is frozen (both my usb keyboard & mouse and my built-in laptop keyboard & laptop touchpad)
- The power button works and causes a nice and graceful system shutdown with CD eject

Now because all input is frozen it was impossible for me to get any data or error messages until i did a trick. I installed freenx and logged on remotely. This allowed me to have a look at the log files.

last lines of /var/log/messages just after boot & login:

Dec 17 10:31:57 mint kernel: [ 1573.290066] usb 5-1: USB disconnect, address 2
Dec 17 10:32:01 mint kernel: [ 1577.340036] usb 5-1: new full speed USB device using uhci_hcd and address 4
Dec 17 10:32:01 mint kernel: [ 1577.530777] usb 5-1: configuration #1 chosen from 1 choice
Dec 17 10:32:01 mint kernel: [ 1577.544766] input: Razer Razer Copperhead Laser Mouse as /devices/pci0000:00/0000:00:1d.0/usb5/5-1/5-1:1.0/input/input14
Dec 17 10:32:01 mint kernel: [ 1577.544899] generic-usb 0003:1532:0101.0005: input,hidraw0: USB HID v1.00 Mouse [Razer Razer Copperhead Laser Mouse] on usb-0000:00:1d.0-1/input0
Dec 17 10:32:01 mint kernel: [ 1577.548874] input: Razer Razer Copperhead Laser Mouse as /devices/pci0000:00/0000:00:1d.0/usb5/5-1/5-1:1.1/input/input15
Dec 17 10:32:01 mint kernel: [ 1577.548971] generic-usb 0003:1532:0101.0006: input,hidraw1: USB HID v0.01 Keyboard [Razer Razer Copperhead Laser Mouse] on usb-0000:00:1d.0-1/input1

Installing udev update adds the following lines:
Dec 17 10:40:33 mint kernel: [ 2088.864288] aufs au_plink_append:280:dpkg[6296]: unexpectedly many pseudo links, 101
Dec 17 10:40:37 mint kernel: [ 2093.168249] udev: starting version 147

Log out feezes all input on the local machine and adds this line:
mint kernel: [ 1908.411133] nautilus[3546]: segfault at 7f2ddcbde770 ip 00007f2ddcbde770 sp 00007fff7bd1eb78 error 14 in SYSV00000000 (deleted)[7f2dddb6d000+60000]

This last segfault is not relevant, it happens every time during log out (even without udev update) and does not cause input freeze by itself. I just added it for completeness.

Happens every time

Ainer (ainer) wrote :

This seems very similar to the bug I reported (but much better described).

eiver (eiver) on 2009-12-17
summary: - System or input freeze on gdm restart while booted from live CD
+ Input freeze on udev update while on Live CD
eiver (eiver) on 2009-12-17
description: updated
description: updated
eiver (eiver) on 2009-12-17
tags: added: freeze input keyboard mouse udev
eiver (eiver) wrote :

I got my hands on another laptop (Fujitsu-Siemens with built-in Intel graphics). I can repeat the same bug on that laptop.
Everything else works fine. Applying all updates except udev package works fine (the bug does not occur).

Suggested solution:
Mark the package udev as a level 5 update (unless that update is critically important for some other purposes).

Done. Elevated rule to level 5 for this package and added this bug in the Additional Info tab of mintupdate.

Changed in linuxmint:
importance: Undecided → High
assignee: nobody → Clement Lefebvre (clementlefebvre)
status: New → Fix Released
eiver (eiver) wrote :

Thanks. That should "fix" the problem for Mint.
I just finished downloading and burning Ubuntu Karmic x64. As expected the bug also occurs there. I marked, that the bug also occurs in ubuntu. If we get a permanent fix for that from Ubuntu team, then it will be possible to reduce the level of the update back to 3.

A typical user does not need to log out often, however this bug is particularly annoying for people with nvidia graphic cards, which require a reboot (or gdm restart) after installing their proprietary drivers.

eiver (eiver) wrote :

Thanks to wonderful Mint community I finally managed to install Mint 8 on a HDD and see how the bug looks from there.
It seems that the scope of the bug is smaller than I initially thought. A reboot fixes the problem. The bug only exists if you update udev and log out, but do not reboot the whole system.

This means that for a HDD installation the severity of this bug is small, but for a LiveCD a reboot is not an option for obvious reasons.

Changed in linuxmint:
status: Fix Released → Fix Committed
status: Fix Committed → Fix Released
Changed in ubuntu:
status: New → Invalid
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