Dear Bjorn,
You may move your 536EP modem to a different PCI slot. As for my
computer, here is what it tells:
[philippe@victor ~]$ lspci -vvv | grep IRQ
Interrupt: pin B routed to IRQ 21
Interrupt: pin A routed to IRQ 20
Interrupt: pin B routed to IRQ 22
Interrupt: pin C routed to IRQ 21
Interrupt: pin D routed to IRQ 23
Interrupt: pin A routed to IRQ 23
Interrupt: pin A routed to IRQ 16
Interrupt: pin A routed to IRQ 17
Interrupt: pin A routed to IRQ 10
Interrupt: pin A routed to IRQ 17
The most important thing to really look at is this:
[philippe@victor ~]$ sudo cat /proc/interrupts
CPU0 CPU1
0: 131 0 IO-APIC-edge timer
1: 5535 0 IO-APIC-edge i8042
3: 2 0 IO-APIC-edge
4: 2 0 IO-APIC-edge
5: 0 0 IO-APIC-edge MPU401 UART
7: 0 0 IO-APIC-edge parport0
8: 1 0 IO-APIC-edge rtc0
9: 0 0 IO-APIC-fasteoi acpi
14: 677 0 IO-APIC-edge pata_via
15: 41068 0 IO-APIC-edge pata_via
17: 5652 0 IO-APIC-fasteoi HDA Intel
20: 0 0 IO-APIC-fasteoi uhci_hcd:usb1
21: 91561 0 IO-APIC-fasteoi uhci_hcd:usb3, sata_via
22: 15208 0 IO-APIC-fasteoi uhci_hcd:usb2
23: 19337 0 IO-APIC-fasteoi uhci_hcd:usb4, eth0
48: 0 0 PCI-MSI-edge aerdrv, pciehp
NMI: 0 0 Non-maskable interrupts
LOC: 394366 400953 Local timer interrupts
RES: 5251 4692 Rescheduling interrupts
CAL: 71 216 Function call interrupts
TLB: 4831 12301 TLB shootdowns
TRM: 0 0 Thermal event interrupts
SPU: 0 0 Spurious interrupts
ERR: 0
MIS: 0
which shows a IRQ conflict between usb3 and sata_via (my SATA disk
drives) as well as usb4 and eth0 (my Ethernet controller). Reorganising
my connectors on the USB bus today shows:
[philippe@victor ~]$ lsusb
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 003: ID 045e:0084 Microsoft Corp. Basic Optical Mouse
Bus 002 Device 002: ID 04a9:2220 Canon, Inc. CanoScan LIDE 25
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
So both my two USB devices are both on usb2 (Bus 002) which IRQ
conflicts with nothing. And now I have a quite stable Linux computer.
This was NOT the case a couple of days ago. When upgrading Fedora 10 to
11, my computer was suddenly stopping while downloading rpms. After
having noticed this IRQ conflict, I then disabled all the USB. This has
enabled me the upgrade. Using my motherboard BIOS, I am totally unable
to get rid from this remaining IRQ conflict and with the motherboard
manual there is absolutely no possible jumper settings.
I just pay the price my computer has cost me 500 euros and as such is
indeed not intended for the professional market although, by some
aspects, it reveals more performant when running CPU intensive programs
than many of these costlier professional computers I have access to.
Yours sincerely,
-
http://vouters.dyndns.org:8080/
Philippe Vouters (Fontainebleau/France)
Le lundi 06 juillet 2009 à 19:12 -0300, Bjorn Wielens a écrit :
> Okay, it does seem to be an IRQ conflict. After booting, lspci reports
> the modem with IRQ 5 (by itself).
> However, after the first use attempt, this changes to 18, which is
> shared with 3 USB controllers and an SMBUS controller.
> I'll try a different PCI slot tomorrow and report what happens- I've
> already tried some kernel parameters, but it doesn't seem to have any
> effect.
> BTW Philippe, I can get access to a 537 modem - I can also test those
> drivers for you.
> Best,
> Bjorn.
>
> Philippe Vouters wrote:
> > Dear Bjorn,
> >
> > Read carefully this
> > http://www.kernel.org/pub/linux/kernel/people/gregkh/lkn/lkn_pdf/ch09.pdf
> > document. Setting appropriate kernel boot parameters may eventually help
> > you workaround IRQ conflicts issues.
> >
> > Yours sincerely,
> > -
> > http://vouters.dyndns.org:8080/
> > Philippe Vouters (Fontainebleau/France)
> >
> >
> > Le lundi 06 juillet 2009 à 03:14 -0700, Bjorn Wielens a écrit :
> >> Hi,
> >> Thanks for the replies.
> >> I was already using the latest driver (July 4th/09). I'll try your tips and do a few tests, then report back. An IRQ issue seems logical, considering other problems I've had.
> >> Best,
> >> Bjorn.
> >>
> >> --- On Mon, 7/6/09, Philippe Vouters <Philippe.Vouters@xxxxxxxxxxx> wrote:
> >>
> >>> From: Philippe Vouters <Philippe.Vouters@xxxxxxxxxxx>
> >>> Subject: Re: 536ep Slow to respond, openSuSE 11.1
> >>> To: "Bjorn Wielens" <Uniacke1@xxxxxxxx>
> >>> Cc: "Antonio Olivares" <olivares14031@xxxxxxxxx>, "Linmodems" <discuss@xxxxxxxxxxxxx>
> >>> Received: Monday, July 6, 2009, 4:22 AM
> >>> Dear Bjorn,
> >>>
> >>> I know of three magic commands which entirely fitted my
> >>> case and which
> >>> may eventually apply to yours :
> >>> $ lscpi -vvv | grep IRQ
> >>> $ sudo cat /proc/interrupts
> >>> $ dmesg | grep IRQ
> >>> Do you eventually notice IRQ conflicts ?
> >>>
> >>> To forward support you, would be please be so kind as to
> >>> download the
> >>> latest 536EP/537EP driver and efax.zip from my Web site
> >>> (URL below) ?
> >>> Carefully read the Intel-Readme.html.
> >>> With efax you have to:
> >>> $ unzip -aa efax
> >>> $ cd efax
> >>> $ make -f Makefile.orig
> >>> and you run the just built efax with ./efax
> >>>
> >>> Yours sincerely,
> >>> -
> >>> http://vouters.dyndns.org:8080/
> >>> Philippe Vouters (Fontainebleau/France)
> >>>
> >>>
> >>> Le dimanche 05 juillet 2009 à 20:41 -0300, Bjorn Wielens a
> >>> écrit :
> >>>> I have an Intel 536EP modem that I'm trying to get
> >>> working.
> >>>> The drivers load, and work fine, but the modem is
> >>> behaving strangely- it
> >>>> is very slow to respond to commands. For example, when
> >>> using wvdial, it
> >>>> will 'hang' at 'Sending ATZ' for a good 5 seconds
> >>> before continuing on.
> >>>> It will then proceed to dial, but there will be other
> >>> problems, such as
> >>>> refusing to disconnect, and the modem then being
> >>> unable to dial out
> >>>> anymore for that boot.
> >>>>
> >>>> While the modem does work partially, wvdial does not
> >>> detect it.
> >>>> I also cannot find any sort of errors in the dmesg
> >>> output.
> >>>> As a result, vgetty does not work either, giving a
> >>> 'timeout while
> >>>> reading char from modem'.
> >>>> I would really like to get the voice function going-
> >>> lately we've been
> >>>> swamped with fake credit card telemarketing scams... I
> >>> thought I'd have
> >>>> the modem play the 'disconnected line' tone when the
> >>> telemarketers call.
> >>>> Thougts/help appreciated.
> >>>>
> >>>> Bjorn.
> >>>>
> >>>
> >>>
> >>
> >> __________________________________________________________________
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> >
> >
> >
>
