http://bugzilla.kernel.org/show_bug.cgi?id=6591
Summary: kernel randomly loses all interrupts from my UHCI or
SATA controllers.
Kernel Version: 2.6.16
Status: NEW
Severity: normal
Owner: [EMAIL PROTECTED]
Submitter: [EMAIL PROTECTED]
This has been going on for a while (since mid-2005, at least), and it hasn't
magically fixed itself, so I'm finally filing a bug.
Distribution: Fedora Core 5
Hardware Environment:
MSI Master2 FAR based dual-Opteron system.
00:00.0 Host bridge: VIA Technologies, Inc. VT8385 [K8T800 AGP] Host Bridge
(rev 01)
00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI bridge [K8T800/K8T890
South]
00:05.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 07)
00:05.1 Input device controller: Creative Labs SB Live! MIDI/Game Port (rev 07)
00:0b.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5705 Gigabit
Ethernet (rev 03)
00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID
Controller (rev 80)
00:0f.1 IDE interface: VIA Technologies, Inc.
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
(rev 81)
00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
(rev 81)
00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
(rev 81)
00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge
[KT600/K8T800/K8T890 South]
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address
Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM
Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Miscellaneous Control
00:19.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
HyperTransport Technology Configuration
00:19.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address
Map
00:19.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM
Controller
00:19.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Miscellaneous Control
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon R200 QH [Radeon
8500] (rev 80)
Problem Description:
Randomly (but fairly often), I stop getting interrupts from my SATA controller
or my UHCI controllers or both -- the counters in /proc/interrupts stop
increasing and I get libata timeout errors or my USB HID mouse movement gets
erratic (because the driver is polling instea of waiting for interrupts).
The devices still work -- IO to the disk will (eventually) complete and my mouse
or gamepad or whatever still work (but not very well).
If I remove and then reload the driver modules (sata_via or uhci_hcd) or
unbind/bind the devices in sysfs, the problem immediately goes away.
Steps to reproduce:
It's random, so there aren't any.
I think GL usage may be a factor, because if I disable all my GL screensavers
and don't otherwise use GL, the incidence goes down (but doesn't stop
altogether).
Likewise, network activity may also be a factor, because this almost always
occurs when I'm downloading something to the SATA disk with BitTorrent (although
that may be just when I'm more likely to notice it).
Of course, it'll also happen when neither GL or network activity is going on, so
I have no idea what is actually going on.
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