bad sharing IRQ
Alexander Apprich
a.apprich at science-computing.de
Thu Sep 9 08:15:32 UTC 2004
Hi Roberto,
Roberto Felloni wrote:
> Hi to all,
> Hi Alexander, and sorry for my delay
> (some hardware problems).
No problem, most of us have been there too ;-)
>
> On Mon, 06 Sep 2004 14:46:59 +0200, Alexander Apprich
> <a.apprich at science-computing.de> wrote:
>
>>Hi Roberto,
>>
>>Roberto Felloni wrote:
>>
>>>Hi to all user.
>>>I newbye for this list and for Linux World's too.
>>>
>>
>>Welcome!
>>
>>
>>>My recent upgrade of RedHat 7.3 on Fedore Core 2 have some problems.
>>
>>Did you really upgrade, or a clean install?
>>
>
>
> You are right!
> Is not an update, but a new installation to cover older RH7.3;
> is an installation type server (for my future domestic network).
>
>
>>>The first and more important is a problem of sharing of the same IRQ
>>>from eth0 and sound card.
>>>
>>
>>Do you really have to share an IRQ for sound and eth0?
>>
>
>
> Yes, I think so.
>
>
>>>(I prefer to use shell for my operation, not GUI)
>>>Someone, kindly, can advise me where and what file of configuration I
>>>do modify ?
>>>... and what kind of modification I must do ?
>>>
>>
>>What is the ouput of (as root)
>>
>> /sbin/lspci -v
>
>
> is this:
> ---------------------------------------------------------------------------------------------------
> 00:00.0 Host bridge: VIA Technologies, Inc. VT82C693A/694x [Apollo
> PRO133x] (rev 02)
> Subsystem: Asustek Computer, Inc.: Unknown device 8023
> Flags: bus master, medium devsel, latency 0
> Memory at e4000000 (32-bit, prefetchable)
> Capabilities: [a0] AGP version 2.0
>
> 00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo
> MVP3/Pro133x AGP] (prog-if 00 [Normal decode])
> Flags: bus master, 66Mhz, medium devsel, latency 0
> Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
> Capabilities: [80] Power Management version 2
>
> 00:04.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super
> South] (rev 22)
> Subsystem: Asustek Computer, Inc.: Unknown device 8023
> Flags: bus master, stepping, medium devsel, latency 0
>
> 00:04.1 IDE interface: VIA Technologies, Inc.
> VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 10)
> (prog-if 8a [Master SecP PriP])
> Flags: bus master, stepping, medium devsel, latency 32
> I/O ports at d800 [size=16]
> Capabilities: [c0] Power Management version 2
>
> 00:04.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
> Controller (rev 10) (prog-if 00 [UHCI])
> Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
> Flags: bus master, medium devsel, latency 32, IRQ 9
> I/O ports at d400 [size=32]
> Capabilities: [80] Power Management version 2
>
> 00:04.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
> Controller (rev 10) (prog-if 00 [UHCI])
> Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
> Flags: bus master, medium devsel, latency 32, IRQ 9
> I/O ports at d000 [size=32]
> Capabilities: [80] Power Management version 2
>
> 00:04.4 Host bridge: VIA Technologies, Inc. VT82C686 [Apollo Super
> ACPI] (rev 30)
> Flags: medium devsel, IRQ 9
> Capabilities: [68] Power Management version 2
>
> 00:04.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686
> AC97 Audio Controller (rev 20)
> Flags: medium devsel, IRQ 10
----> ^^^^^^^
> I/O ports at b800
> I/O ports at b400 [size=4]
> I/O ports at b000 [size=4]
> Capabilities: [c0] Power Management version 2
>
> 00:0c.0 VGA compatible controller: S3 Inc. ViRGE/DX or /GX (rev 01)
> (prog-if 00 [VGA])
> Subsystem: S3 Inc. ViRGE/DX
> Flags: bus master, medium devsel, latency 32, IRQ 11
> Memory at dc000000 (32-bit, non-prefetchable) [size=768K]
> Expansion ROM at 00010000 [disabled]
>
> 00:0d.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
> RTL-8139/8139C/8139C+ (rev 10)
> Subsystem: Realtek Semiconductor Co., Ltd. RT8139
> Flags: bus master, medium devsel, latency 32, IRQ 9
-----> ^^^^^^
> I/O ports at a400
> Memory at db800000 (32-bit, non-prefetchable) [size=256]
> Capabilities: [50] Power Management version 2
> ---------------------------------------------------------------------------------------------------
>
Okay, here we go.
Your soundcard (Multimedia audio controller: VIA Technologies, Inc.
VT82C686 AC97 Audio) uses IRQ10, and you network card (Ethernet
controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+)
uses IRQ9.
So now I'm wondering where exactly your problem is?! Does one of these
not work?
This is a snip of an /sbin/lspci -v on my system, and I have these
3 components all using the same IRQ. Never had an problem with that.
00:0d.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100]
(rev 0c)
Subsystem: Intel Corp. EtherExpress PRO/100 S Desktop Adapter
Flags: bus master, medium devsel, latency 32, IRQ 11
00:11.1 IDE interface: VIA Technologies, Inc. VT82C586/B/686A/B PIPC Bus
Master IDE (rev 06) (prog-if 8a [Master SecP PriP])
Subsystem: Asustek Computer, Inc. VT8233A Bus Master
ATA100/66/33 IDE
Flags: bus master, stepping, medium devsel, latency 32, IRQ 11
01:00.0 VGA compatible controller: nVidia Corporation NV17 [GeForce4 MX
440] (rev a3) (prog-if 00 [VGA])
Subsystem: Micro-Star International Co., Ltd.: Unknown device 8470
Flags: bus master, 66Mhz, medium devsel, latency 248, IRQ 11
>>
>>>(sorry for my english)
>>>Thank's in advantage
>>>
>>>bye by roberto
>>>
>>>
>>
>>Alex
>>
>
>
> Many thank's for your interest.
> bye
Alex
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