Public bug reported:
Using kernel 2.6.24-23-rt installed via UbuntuStudio, my system was
experiencing frequent hard lockups/freezes: no response to numlock,
ctrl-alt-backspace, etc.
I switched to boot off kernel 2.6.24-21-rt, and the freezes disappeared.
The /var/log/messages seems to show that the following complaint is
written repeatedly before the freeze:
Feb 28 00:37:22 name dhcdbd: message_handler: message handler not found under
/com/redhat/dhcp/eth1 for sub-path eth1.dbus.get.reason
Feb 28 00:37:25 name kernel: [ 67.552676] NET: Registered protocol family 17
Feb 28 00:37:27 name dhcdbd: message_handler: message handler not found under
/com/redhat/dhcp/eth1 for sub-path eth1.dbus.get.nis_domain
Feb 28 00:37:27 name dhcdbd: message_handler: message handler not found under
/com/redhat/dhcp/eth1 for sub-path eth1.dbus.get.nis_servers
Feb 28 00:37:27 name dhcdbd: message_handler: message handler not found under
/com/redhat/dhcp/eth1 for sub-path eth1.dbus.get.interface_mtu
System info:
$ lspci
00:00.0 Host bridge: nVidia Corporation nForce2 IGP2 (rev c1)
00:00.1 RAM memory: nVidia Corporation nForce2 Memory Controller 1 (rev c1)
00:00.2 RAM memory: nVidia Corporation nForce2 Memory Controller 4 (rev c1)
00:00.3 RAM memory: nVidia Corporation nForce2 Memory Controller 3 (rev c1)
00:00.4 RAM memory: nVidia Corporation nForce2 Memory Controller 2 (rev c1)
00:00.5 RAM memory: nVidia Corporation nForce2 Memory Controller 5 (rev c1)
00:01.0 ISA bridge: nVidia Corporation MCP2A ISA bridge (rev a3)
00:01.1 SMBus: nVidia Corporation MCP2A SMBus (rev a1)
00:02.0 USB Controller: nVidia Corporation MCP2A USB Controller (rev a1)
00:02.1 USB Controller: nVidia Corporation MCP2A USB Controller (rev a1)
00:02.2 USB Controller: nVidia Corporation MCP2A USB Controller (rev a2)
00:08.0 PCI bridge: nVidia Corporation MCP2A PCI Bridge (rev a3)
00:09.0 IDE interface: nVidia Corporation MCP2A IDE (rev a3)
00:0b.0 IDE interface: nVidia Corporation nForce2 Serial ATA Controller (rev a3)
00:1e.0 PCI bridge: nVidia Corporation nForce2 AGP (rev c1)
01:06.0 RAID bus controller: VIA Technologies, Inc. VT6421 IDE RAID Controller
(rev 50)
01:07.0 VGA compatible controller: 3Dfx Interactive, Inc. Voodoo 3 (rev 01)
01:08.0 Multimedia audio controller: VIA Technologies Inc. ICE1712 [Envy24] PCI
Multi-Channel I/O Controller (rev 02)
01:09.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)
01:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)
$ cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 10
model name : AMD Athlon(tm) XP 3200+
stepping : 0
cpu MHz : 2186.231
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow up ts
bogomips : 4374.39
clflush size : 32
$ cat /proc/version
Linux version 2.6.24-21-rt (bui...@palmer) (gcc version 4.2.3 (Ubuntu
4.2.3-2ubuntu7)) #1 SMP PREEMPT RT Wed Oct 22 01:36:03 UTC 2008
(Obviously, I'm using 2.6.24-21 to write this bug up.)
$ lsb_release -rd
Description: Ubuntu 8.04.2
Release: 8.04
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: kernel realtime ubuntustudio
--
When using kernel 2.6.24-23-rt, system experiences frequent lockups
https://bugs.launchpad.net/bugs/336455
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