* Odd bug in SATA link power management
@ 2009-10-30 19:25 Pedro Ribeiro
2009-10-31 5:28 ` Lee Revell
2009-11-02 14:51 ` Thomas Gleixner
0 siblings, 2 replies; 4+ messages in thread
From: Pedro Ribeiro @ 2009-10-30 19:25 UTC (permalink / raw)
To: linux-rt-users
Hi,
I found a rather odd but potentially dangerous bug on my platform. I'm
using the latest 2.6.31.4-rt14 kernel on a Lenovo T400 laptop.
I have a script which does some battery optimizing when I unplug my
laptop from the AC. Apparently, the option controlling SATA link power
management is the culprit.
This is how it works:
I'm using pm-utils to execute scripts on power event changes. When the
AC is disconnected, the following command is executed:
echo min_power > /sys/class/scsi_host/host0/link_power_management_policy
When the AC is re-connected, this is the command:
echo max_performance > /sys/class/scsi_host/host0/link_power_management_policy
At this point, some GNOME icons disappear and every command in
terminal or mouse click in Xorg just returns input/output error or
some combo box with gibberish characters. When I change to a VT, the
kernel says "can't flush to disk" or something like that. Bottom line,
nothing works and I must shutdown by holding the power button 3
seconds.
The tricky part is that doing those two commands by hand (disabling
the pm-utils script which does it, remove the AC, set min_power,
insert the AC, set max_performance) doesn't crash the computer! Only
when the script is run automatically by pm-utils it crashes. So I
guess the timing is important here.
This bug is always reproducible and does not happen with Debian kernel
2.6.30.2. I didn't test any other kernel, not even the 2.6.31.4
vanilla.
Below I'm sending the script which does the pm-utils action and my
lspci -vv. Is there any advice you can give me?
Thanks in advance,
Pedro
----------------------------------------------------------------------------
my pm-utils script (all the irrelevant commands are commented; the
script crashes the laptop as it is, I tried every single command by
itself)
if [ ! $1 ]
then
echo "ERROR: Argument must be on or off"
exit 1
fi
if [ $1 = on ]
then
#xset dpms 0 0 600
#echo disable > /proc/acpi/ibm/bluetooth
echo min_power > /sys/class/scsi_host/host0/link_power_management_policy
#a ultrabay tem de ser ejectada ANTES de mudar o link power
#/usr/local/sbin/ultrabay_eject
#echo min_power > /sys/class/scsi_host/host1/link_power_management_policy
exit 0
else if [ $1 = off ]
then
#xset dpms 0 0 1500
#echo disable > /proc/acpi/ibm/bluetooth
echo max_performance >
/sys/class/scsi_host/host0/link_power_management_policy
#echo max_performance >
/sys/class/scsi_host/host1/link_power_management_policy
exit 0
else
echo "ERROR: Argument must be on or off"
fi
fi
----------------------------------------------------------------------------------
lspci -vv
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory
Controller Hub (rev 07)
Subsystem: Lenovo Device 20e0
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 0
Capabilities: <access denied>
Kernel driver in use: agpgart-intel
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series
Chipset Integrated Graphics Controller (rev 07) (prog-if 00 [VGA
controller])
Subsystem: Lenovo Device 20e4
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 30
Region 0: Memory at f4400000 (64-bit, non-prefetchable) [size=4M]
Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at 1800 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)
Subsystem: Lenovo Device 20e4
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Region 0: Memory at f4200000 (64-bit, non-prefetchable) [size=1M]
Capabilities: <access denied>
00:03.0 Communication controller: Intel Corporation Mobile 4 Series
Chipset MEI Controller (rev 07)
Subsystem: Lenovo Device 20e6
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 11
Region 0: Memory at fc225800 (64-bit, non-prefetchable) [size=16]
Capabilities: <access denied>
00:19.0 Ethernet controller: Intel Corporation 82567LF Gigabit Network
Connection (rev 03)
Subsystem: Lenovo Device 20ee
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 27
Region 0: Memory at fc000000 (32-bit, non-prefetchable) [size=128K]
Region 1: Memory at fc024000 (32-bit, non-prefetchable) [size=4K]
Region 2: I/O ports at 1820 [size=32]
Capabilities: <access denied>
Kernel driver in use: e1000e
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB
UHCI Controller #4 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 20
Region 4: I/O ports at 1840 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB
UHCI Controller #5 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin B routed to IRQ 21
Region 4: I/O ports at 1860 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB
UHCI Controller #6 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin C routed to IRQ 22
Region 4: I/O ports at 1880 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2
EHCI Controller #2 (rev 03) (prog-if 20 [EHCI])
Subsystem: Lenovo Device 20f1
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin D routed to IRQ 23
Region 0: Memory at fc225c00 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio
Controller (rev 03)
Subsystem: Lenovo Device 20f2
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin B routed to IRQ 17
Region 0: Memory at fc020000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express
Port 1 (rev 03) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport-driver
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express
Port 2 (rev 03) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
Memory behind bridge: f4300000-f43fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport-driver
00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express
Port 5 (rev 03) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=0d, subordinate=14, sec-latency=0
I/O behind bridge: 00003000-00003fff
Memory behind bridge: fa000000-fbffffff
Prefetchable memory behind bridge: 00000000f4100000-00000000f41fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport-driver
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB
UHCI Controller #1 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 16
Region 4: I/O ports at 18a0 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB
UHCI Controller #2 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin B routed to IRQ 17
Region 4: I/O ports at 18c0 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB
UHCI Controller #3 (rev 03) (prog-if 00 [UHCI])
Subsystem: Lenovo Device 20f0
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin C routed to IRQ 18
Region 4: I/O ports at 18e0 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2
EHCI Controller #1 (rev 03) (prog-if 20 [EHCI])
Subsystem: Lenovo Device 20f1
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin D routed to IRQ 19
Region 0: Memory at fc226000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
(prog-if 01 [Subtractive decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Bus: primary=00, secondary=15, subordinate=18, sec-latency=32
I/O behind bridge: 00004000-00007fff
Memory behind bridge: f4800000-f7ffffff
Prefetchable memory behind bridge: 00000000f0000000-00000000f3ffffff
Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 03)
Subsystem: Lenovo Device 20f6
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Capabilities: <access denied>
00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI
Controller (rev 03) (prog-if 01 [AHCI 1.0])
Subsystem: Lenovo Device 20f8
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin B routed to IRQ 28
Region 0: I/O ports at 1818 [size=8]
Region 1: I/O ports at 180c [size=4]
Region 2: I/O ports at 1810 [size=8]
Region 3: I/O ports at 1808 [size=4]
Region 4: I/O ports at 1c00 [size=32]
Region 5: Memory at fc225000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
Subsystem: Lenovo Device 20f9
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 23
Region 0: Memory at fc226400 (64-bit, non-prefetchable) [size=256]
Region 4: I/O ports at 1c20 [size=32]
Kernel driver in use: i801_smbus
03:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN
[Shiloh] Network Connection
Subsystem: Intel Corporation Device 1211
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 29
Region 0: Memory at f4300000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: iwlagn
15:00.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ba)
Subsystem: Lenovo Device 20c6
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 168, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at f4800000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=15, secondary=16, subordinate=17, sec-latency=176
Memory window 0: f0000000-f3fff000 (prefetchable)
Memory window 1: 7c000000-7ffff000
I/O window 0: 00004000-000040ff
I/O window 1: 00004400-000044ff
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt+ PostWrite+
16-bit legacy interface ports at 0001
Kernel driver in use: yenta_cardbus
15:00.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller
(rev 04) (prog-if 10 [OHCI])
Subsystem: Lenovo Device 20c7
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32 (500ns min, 1000ns max), Cache Line Size: 64 bytes
Interrupt: pin B routed to IRQ 17
Region 0: Memory at f4801000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ohci1394
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Odd bug in SATA link power management
2009-10-30 19:25 Odd bug in SATA link power management Pedro Ribeiro
@ 2009-10-31 5:28 ` Lee Revell
2009-11-02 14:51 ` Thomas Gleixner
1 sibling, 0 replies; 4+ messages in thread
From: Lee Revell @ 2009-10-31 5:28 UTC (permalink / raw)
To: Pedro Ribeiro; +Cc: linux-rt-users
On Fri, Oct 30, 2009 at 3:25 PM, Pedro Ribeiro <pedrib@gmail.com> wrote:
> The tricky part is that doing those two commands by hand (disabling
> the pm-utils script which does it, remove the AC, set min_power,
> insert the AC, set max_performance) doesn't crash the computer! Only
> when the script is run automatically by pm-utils it crashes. So I
> guess the timing is important here.
Try with 'sleep 10.0s' at the top of the script. If that works reduce
the sleep time until you find the smallest value that works. Then
separately test with the sleep in only the on or off case, and post
your results.
Lee
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Odd bug in SATA link power management
2009-10-30 19:25 Odd bug in SATA link power management Pedro Ribeiro
2009-10-31 5:28 ` Lee Revell
@ 2009-11-02 14:51 ` Thomas Gleixner
2009-11-03 15:33 ` Pedro Ribeiro
1 sibling, 1 reply; 4+ messages in thread
From: Thomas Gleixner @ 2009-11-02 14:51 UTC (permalink / raw)
To: Pedro Ribeiro; +Cc: linux-rt-users
On Fri, 30 Oct 2009, Pedro Ribeiro wrote:
> This bug is always reproducible and does not happen with Debian kernel
> 2.6.30.2. I didn't test any other kernel, not even the 2.6.31.4
> vanilla.
>
> Below I'm sending the script which does the pm-utils action and my
> lspci -vv. Is there any advice you can give me?
Yes, please test 2.6.31.4 vanilla so we know whether the problem is
related to the -rt patch or not.
Thanks,
tglx
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Odd bug in SATA link power management
2009-11-02 14:51 ` Thomas Gleixner
@ 2009-11-03 15:33 ` Pedro Ribeiro
0 siblings, 0 replies; 4+ messages in thread
From: Pedro Ribeiro @ 2009-11-03 15:33 UTC (permalink / raw)
To: linux-rt-users
Apparently this a vanilla kernel bug. Thanks for your help.
On Mon, Nov 2, 2009 at 2:51 PM, Thomas Gleixner <tglx@linutronix.de> wrote:
> On Fri, 30 Oct 2009, Pedro Ribeiro wrote:
>> This bug is always reproducible and does not happen with Debian kernel
>> 2.6.30.2. I didn't test any other kernel, not even the 2.6.31.4
>> vanilla.
>>
>> Below I'm sending the script which does the pm-utils action and my
>> lspci -vv. Is there any advice you can give me?
>
> Yes, please test 2.6.31.4 vanilla so we know whether the problem is
> related to the -rt patch or not.
>
> Thanks,
>
> tglx
>
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^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2009-11-03 15:33 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-10-30 19:25 Odd bug in SATA link power management Pedro Ribeiro
2009-10-31 5:28 ` Lee Revell
2009-11-02 14:51 ` Thomas Gleixner
2009-11-03 15:33 ` Pedro Ribeiro
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