NO ADSL with kernel-smp 2.6.12-1.1376_FC3
Bob Chiodini
rchiodin at bellsouth.net
Wed Aug 31 12:18:04 UTC 2005
On Wed, 2005-08-31 at 14:09 +0200, Antonio Montagnani wrote:
> Bob Chiodini said the following on 31/08/2005 12:53:
> > On Wed, 2005-08-31 at 11:47 +0200, Antonio Montagnani wrote:
> >
> >>Bob Chiodini said the following on 31/08/2005 11:33:
> >>
> >>>On Wed, 2005-08-31 at 07:52 +0200, Antonio Montagnani wrote:
> >>>
> >>>
> >>>>Edward Dekkers said the following on 31/08/2005 06:26:
> >>>>
> >>>>
> >>>>>Antonio Montagnani wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>>Antonio Montagnani said the following on 30/08/2005 09:16:
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>>Edward Dekkers said the following on 30/08/2005 09:06:
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>>Antonio Montagnani wrote:
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>>I cannot connect to my ADSL Internet if I use SMP kernel, while
> >>>>>>>>>with standard 2.6.12-1.1376 kernel on same machine, it works
> >>>>>>>>>flawlessly.
> >>>>>>>>>The modem works, Ethernet network is on but connection is refused
> >>>>>>>>>Shall I file a bug??
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>No,
> >>>>>>>>
> >>>>>>>>There is no real difference between running a standard kernel or an
> >>>>>>>>SMP one. Bar the fact that SMP will actually use the two processors
> >>>>>>>>in your machine that is. I run SMP myself, and it makes no
> >>>>>>>>difference to my connection running standard or SMP kernel.
> >>>>>>>>
> >>>>>>>>I'd look at doing some other diagnostic work before filing a report.
> >>>>>>>>
> >>>>>>>>We can't help you for the rest because you don't explain your set up.
> >>>>>>>>
> >>>>>>>>Regards,
> >>>>>>>>Ed.
> >>>>>>>>
> >>>>>>>
> >>>>>>>My setup is very standard, a Pentium 4 Asus motherboard P5P800, 1 GB,
> >>>>>>>two network cards (the integrated is connected to my network, the
> >>>>>>>Realtek 8029 to my ethernet modem).
> >>>>>>>Which diagnostic shall I check??
> >>>>>>>
> >>>>>>
> >>>>>>upgraded to FC4, same behaviour also with 2.6.12-1.447smp
> >>>>>>
> >>>>>>where to look???
> >>>>>>
> >>>>>
> >>>>>Number one would be to see if the Realtek interface actually comes up -
> >>>>>then there's a whole slew of tools like ifconfig, ping, iptraf, dhclient
> >>>>>etc. to be used one by one to see where the problem lies.
> >>>>>
> >>>>>When I asked you to provide more details, I wasn't really after
> >>>>>motherboard and stuff like that, I was after your internet connection
> >>>>>details of course. This is how I would describe one for example:
> >>>>>
> >>>>>Maestro Woomera Serial modem connected to /dev/ttyS0
> >>>>>Using pppd on demand/wvdial to make a connection
> >>>>>The IP address on that interface (ppp0) is assigned dynamically by my isp.
> >>>>>The log shows dialling to be ok, and pppd taking over the connection
> >>>>>once wvdial has established it.
> >>>>>ifconfig shows an IP allocated to me ip address: 203.0.178.191 with
> >>>>>netmask 255.255.255.0.
> >>>>>I can ping internal addresses and external ones by name
> >>>>>(www.microsoft.com) and number (207.46.199.60).
> >>>>>
> >>>>>This is in the case of dial-up. Your trace will be different.
> >>>>>
> >>>>>Really, you have provided nothing of use in diagnosing this problem. I'm
> >>>>>assuming your modem takes care of the connection and just gives you an
> >>>>>internal IP address which you set to the gateway? or do you need to run
> >>>>>PPPoE or some other protocol manually?
> >>>>>
> >>>>>You must assume we know nothing about your set-up when posting to this
> >>>>>list.
> >>>>>
> >>>>>Regards,
> >>>>>Ed.
> >>>>
> >>>> Ed,
> >>>>
> >>>>it seems that I can't ping the Ethernet modem when using SMP
> >>>>kernel(destination unreachable), if I connet to ist internal webpage I
> >>>>get a message of no routing.
> >>>>I have iptables running: and everything is o.k on standard kernel!!!
> >>>>What is happening???
> >>>>
> >>>>--
> >>>> Antonio
> >>>
> >>>
> >>>Anything relevant in /var/log/messages? What is the output of route -n?
> >>>
> >>>Bob...
> >>>
> >>
> >>I had a look at /var/log/messages (that I attach, only as e-mail to
> >>you...), but I am not very expert.
> >>I see a timeout transmit on eth0 repeated many times when using SMP
> >>kernel at about 6.35 at the end.
> >>I see also many errors conencted to ACPI (on both kernels) that I am not
> >>able to decode
> >>
> >>Tnx
> >>
> >
> >
> > Antonio,
> >
> > I culled the messages down into a SMP boot and a UP boot. A quick look
> > indicates one message is missing in the SMP boot log. It's marked with
> > an arrow and indicates that the eth0 device interrupt was detected as
> > IRQ 11 (UP only). Hopefully someone can shed some light on this. Some
> > other information that might help:
> >
> > cat /proc/interrupts for both the UP and SMP.
> >
> > Also, do you have the latest BIOS installed for your motherboard? What
> > kind of motherboard is this?
>
>
> An Asus P5P800, Bios updated in July
>
> Check the IO-APIC options in the BIOS
> > setup.
> >
> > You might try moving the realtek NIC to another slot. That's a shot in
> > the dark, but it's pretty early and I'm only into my first cup of
> > coffee!
> >
> > Bob...
> >
>
> Standard
> CPU0
> 0: 20180445 XT-PIC timer
> 1: 5563 XT-PIC i8042
> 2: 0 XT-PIC cascade
> 5: 701131 XT-PIC SysKonnect SK-98xx, Intel ICH5,
> ehci_hcd:usb1, uhci_hcd:usb3
> 8: 1 XT-PIC rtc
> 11: 380784 XT-PIC uhci_hcd:usb2, uhci_hcd:usb4,
> uhci_hcd:usb5, eth0
> 12: 801086 XT-PIC i8042
> 14: 112972 XT-PIC ide0
> 15: 358109 XT-PIC ide1
> NMI: 0
> ERR: 0
>
> SMP
> CPU0 CPU1
> 0: 137004 48896 IO-APIC-edge timer
> 1: 29 27 IO-APIC-edge i8042
> 5: 0 0 IO-APIC-edge SysKonnect SK-98xx, Intel
> ICH5, ehci _hcd:usb1, uhci_hcd:usb3
> 8: 1 0 IO-APIC-edge rtc
> 11: 0 0 IO-APIC-edge uhci_hcd:usb2,
> uhci_hcd:usb4, uhci_h cd:usb5, eth0
> 12: 1146 836 IO-APIC-edge i8042
> 14: 9294 5957 IO-APIC-edge ide0
> 15: 440 568 IO-APIC-edge ide1
> NMI: 0 0
> LOC: 181971 182055
> ERR: 0
> MIS: 0
>
> I am wondering if the two kernels have different management of iptables,
> in particular IPv4 or IPv6, another shot in the dark, even if is
> afternoon here
>
> tnx
Antonio,
service iptables stop. I suspect that the IRQ for eth0 is not getting
properly registered and thus the timeouts.
Does specifying acpi=ht on the SMP kernel command line make any
difference? It probably defeats the purpose of SMP.
Bob...
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