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...
