3550 port problem diagnostics

A HP printer connected to f0/42 on a 3550 suddenly lost connections. The cable and jacks were tested fine. Interface light on the Catalyst looked normal. Hooked a laptop to the wall jack. It auto-negotiated and had a L2 link connection. But no traffic could pass. Changing speed/duplex on both end didn't help. Switchport interface doesn't have any physical/link layer errors. Only errors were 44392 underrun errors which other ports on this switch also have. Changing Vlan configuration or shutting down the interface did not work. "sh post" looks fine.
"sh controller ethernet-controller fastEthernet 0/42" has only the follow errors:
44392 Discarded frames
1190 Symbol error frames
1187 Invalid frames, too small
0 Valid frames, too small
This is the second time it happened. The only solution I have is to reload the switch, which fixed the problem last time.
Does anyone have any idea to figure out what exactly went wrong with f0/42? I guess the interface controller is bad.
Thanks much in advance!

Had this kind of problem before. It is a hardware defection. We opened an RMA with Cisco and replaced the switch.
Hope this helps,
Regards,

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I came here looking for some insight . . . . and while i got some confirmation that it's a common problem, I think some things need to be cleared up.
There's a mistake being made that disconnects cause and effect by lumping together effects that aren't necessarily from the same cause. Don't feel bad, everybody does it, I've just been trained to be critical about it.
I think there is more than one issue. Here's why.
1: I think the chipset or BIOS is cooking the ps/2 mouse data stream (and maybe USB HID data streams as well) when the "BIOS Support for USB Mouse" option is turned on. By this i mean that it's presenting the operating system with a virtual mouse device and working some behind-the-scenes magic on the data between computer and mouse.
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Jul 10 19:38:00 type kernel: psmouse.c: Failed to enable mouse on isa0060/serio1
Jul 10 19:38:01 type kernel: psmouse.c: Mouse at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.
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Jul 11 21:58:48 type kernel: input: ImExPS/2 Generic Explorer Mouse on isa0060/serio1
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Disabling this bios option also makes all my PS/2 mice and trackballs work on bootup, where all of them needed to be re-plugged or have the kvm switch to another port and back before they would work previously.
I think many people are having some of their problems purely because of this bios option.
I think this is very bad, and that the developers responsible for this bios feature should be subjected to a public flogging and sent to a reeducation camp where they might learn to respect the law that the quality of a piece of software is inversely proportional to the amount of magic performed within it.
I can't even think of what the advantage of a virtual PS/2 mouse would be. You want to run DOS with mouse.com driving your usb mouse or something? We're supporting Win95 OSR1 users? I guess it might make Partition Magic boot floppies a tiny bit easier to manage, but sheesh. The damage far outweighs the benefit.
Even when it works, it will only work for fairly plain mice that don't need special protocols to work.
I don't think MSI did this, I think the bios vendor did it, and MSI doesn't realize what's going on.
Yes, I know the Explorer is a USB mouse on a PS/2 adapter, but i started down this road because my Logitech trackball - which uses the MouseManPlus protocol - and it still didn't work right when i replaced the mouse. I have a PS/2 based KVM that I'd like to keep using. The KVM has been out of the loop for these diagnostics.
2: While i admit that it could very well be a PS/2 port power issue, I think it has nothing at all to do with system power supply problems, least of all the 12V rail.
Why? Why on earth would my 5V keyboard and mouse care what's happening on the 12V rail, what's why.
Furthermore, the same KB and mouse mostly kinda/sorta work on a USB to PS2 adapter cable, which is on the exact same 5V rail as the keyboard and mouse ports, and if anything should draw MORE power.
They are however probably on separate fuses.
If it's a power problem, I'm leaning toward it being a slow-blowing fuse on the PS/2 ports that is being pushed near it's limits and is thus rippling. This is conjecture, and only MSI's rework guys or someone with a lot of diagnostic gear can tell you for sure.
3: Having fixed the mouse initialization and synchronization problems, I still have a problem.
I replaced my Lexmark (IBM) PS/2 keyboard with a KeyTronic PS/2 keyboard, replaced my Logitech Trackman Marble FX with a Microsoft Trackball Explorer, and sometimes, I still get an input lockup.
The mouse will just stop tracking in mid-sweep and the keyboard will stop keying.
And then the kernel says this:
Jul 11 23:37:49 type kernel: atkbd.c: Keyboard on isa0060/serio0 reports too many keys pressed.
Jul 11 23:37:50 type last message repeated 54 times
Jul 11 23:37:50 type kernel: atkbd.c: Spurious ACK on isa0060/serio0. Some program, like XFree86, might be trying access hardware directly
Jul 11 23:37:50 type kernel: input: AT Translated Set 2 keyboard on isa0060/serio0
Jul 11 23:37:50 type kernel: atkbd.c: Keyboard on isa0060/serio0 reports too many keys pressed.
Jul 11 23:38:18 type last message repeated 623 times
Jul 11 23:38:18 type kernel: atkbd.c: Unknown key released (translated set 2, code 0x7c on isa0060/serio0).
Jul 11 23:38:18 type kernel: atkbd.c: Use 'setkeycodes 7c <keycode>' to make it known.
Jul 11 23:38:18 type kernel: atkbd.c: Spurious ACK on isa0060/serio0. Some program, like XFree86, might be trying access hardware directly
Jul 11 23:38:19 type kernel: atkbd.c: Keyboard on isa0060/serio0 reports too many keys pressed.
Jul 11 23:38:19 type last message repeated 10 times
Jul 11 23:38:19 type kernel: atkbd.c: Unknown key released (translated set 2, code 0x68 on isa0060/serio0).
Jul 11 23:38:19 type kernel: atkbd.c: Use 'setkeycodes 68 <keycode>' to make it known.
Jul 11 23:38:19 type kernel: atkbd.c: Spurious ACK on isa0060/serio0. Some program, like XFree86, might be trying access hardware directly
Jul 11 23:38:21 type kernel: atkbd.c: Keyboard on isa0060/serio0 reports too many keys pressed.
Jul 11 23:38:21 type last message repeated 4 times
Jul 11 23:38:21 type kernel: atkbd.c: Spurious ACK on isa0060/serio0. Some program, like XFree86, might be trying access hardware directly
Jul 11 23:38:46 type kernel: atkbd.c: Keyboard on isa0060/serio0 reports too many keys pressed.
Jul 11 23:39:16 type last message repeated 2439 times
Jul 11 23:40:16 type last message repeated 4986 times
Jul 11 23:41:16 type last message repeated 4988 times
Jul 11 23:42:16 type last message repeated 4987 times
Jul 11 23:43:16 type last message repeated 4987 times
Jul 11 23:44:16 type last message repeated 4987 times
Jul 11 23:45:16 type last message repeated 4986 times
Jul 11 23:46:16 type last message repeated 4944 times
Jul 11 23:46:24 type last message repeated 688 times
I wonder if the "AT Translated" designation that the atkbd driver gives the keyboard may indicate that the PS/2 keyboard is having it's data stream cooked as well?
Edit: (for geeks) - It turns out that bios can set up your keyboard as either "raw" or "translated". It's possible to switch a keyboard back into "raw" mode, but most operating systems don't do this because it can cause problems on laptops and other computers that don't have their keyboard on a normal ps/2 port.
I don't mind having a keyboard on a usb converter, but the usb converter translates the ps/2 mouse signals too poorly. My Trackman FX has no buttons on the usb converter, and the Explorer is missing two buttons on the usb converter.
4: I don't have the 'reboot' problem, but maybe that only happens in windows.
What i see sometimes is the above, and sometimes the keyboard starts responding slowly - like it takes 30 seconds per keypress. And sometimes by re-plugging the connectors i can get it to come back.
I'm CERTAIN that some of these problems - at least one of them - can be fixed in bios. If only by defaulting the mouse bios support to off. This won't keep you from being able to navigate in bios or use your USB mouse in any OS since Win95 OSR2.1.
For at least the mouse problems, it appears that many of the problems people have reported can be resolved merely by disabling "BIOS Support for USB Mouse".

Quote from: d2thez on 13-July-05, 10:00:03
Ok, I am lost to be honest, but I just need to know if this applies to me. Please help!
I have a K8N Neo Platinum for the socket 754, not a Neo2. I use a USB mouse and a PS/2 keyboard. I have both "USB keyboard/storage support" and "USB mouse support" enabled in my bios.
You have me scared from reading your post that having them enabled will short out my PS/2 or USB. Will this happen? And should I have these options enabled or not?
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If you have a PS/2 keyboard and you don't intend to boot off of a USB drive, you can safely disable that option with no loss in functionality of any kind.
The second one - USB Mouse Support - This is a bit of software in BIOS that takes control of USB mice and makes them appear like PS/2 mice in order to provide easy mouse support for operating systmems that don't understand USB.
Specifically, DOS and Windows versions prior to Win95 OSR2.1.
Since Win95 probably won't boot at all on an Athlon64 - and in any case won't have the drivers you need for nearly anything - the only possible scenario where you might need this feature is if you were booting some old versions of Partition Magic or Norton Ghost or other utility floppy that runs on DOS, supports mouse navigation, and is old enough that it doesn't have a DOS USB mouse driver. Newer versions of pqmagic and ghost probably have usb mouse support on their boot floppies.
You can stop reading now if you just wanted to be reassured.
The reason it causes a problem is because mice are far more complex than keyboards. For some reason, even if you don't have a USB mouse installed, the signals from your PS/2 mouse are run through software in BIOS to make the signals from your mouse look like the signals from a generic PS/2 mouse - instead of a mouse that speaks the MouseMan protocol or the Intelimouse protocol or the Explorer protocol (or three or four other protocols).
This sounds like a strange way to do it, but it's actually easier in software to treat all inputs to the same logic and translate them to a virtual device than it is to detect whether translation is needed and then only translate the signals that need it.
This interferes with the mouse drivers. It also makes it impossible for some mice to 'wake up' properly when the computer is turned on.
It also doesn't work very well because it doesn't install all the myriad mouse protocols out there. KVM manufacturers have the same problem. If they fix the Intelimouse protocol they frequently break the MouseMan protocol.
If your mouse has only two or three buttons and no scroll wheel (which counts as two or three buttons), and your mouse was not made by Microsoft or Logitech, chances are your mouse only speaks the plain PS/2 Mouse protocol and you won't have problems with translation, but you might have some other symptoms. It appears that the BIOS may actually understand the Intelimouse protocol, so Microsoft mice may work anyway.

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Can someone help me please, I'm loosing my hair !!
Thanks !

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Hi
I'm having some problems with my HP6730s.
1. First problem I noticed is that if I keep it running for a long period of time, 2 UBS ports (right side, near DVD drive) stop working and Windows keeps informing me about malfunctioning devices if I have any device connected to those ports. Since I usually have a wireless receiver for my Logitech connected to one of those ports, I can't get rid of the error not even if I disconnect it. The only thing that works is to turn off the laptop and remove the power cable for 30-60 minutes. This makes me think those USB ports don't get enough power.
2. I seem to be having problems when I'm trying to boot up using a Linux CD/DVD/USB. I insert the media I wan't to boot up from and I can see the DVD Drive/USB led flickering and then it stops. The Caps led starts flickering and that's it. I have to force shut down so that I can boot up again. At first I thought that it's the media I'm trying to boot up from or the BIOS settings but then I noticed that sometimes it boots up and sometimes it doesn't. I manage to boot up Ubuntu CD after 10 tryouts. openSUSE(11.xx)(the distro I need & use) is very problematic. LiveCDs won't boot up and install DVDs will simply hang on boot. If by any chance I manage to boot it up it pops out a error message and it forces me into failsafe boot/install. I also managed to install openSUSE once but it failed to auto configure videocard so I got stuck in text mode. Trying to manually install ATI drivers failed because it was unable to detect the video card. Same thing happened in Windows when I tried to upgrade the driver using the one on AMD website.
I bought the laptop in January 2009 and in December 2010 I replaced the battery.
I'm now running Windows 7 Professionas SP1 x64 up to date Also, HP Tools is up to date and I used to test the laptop for hardware issues and nothing was found. I also tested the video card and everything seamd to be fine.

I found out what's causing this but not how to fix it. I can only prevent it.
It seams that if you keep the device plugged in too much, those ports won't get enough power.
The best way to prevent this is to remove the battery when you keep the device plugged in and to also remove it when you turn it off.
I noticed this won't happen if I keep the device plugged in and ON for a long period of time but only if I keep it plugged in when turned off and if I also keep the battery inside.
But this will only fix the USB problem, not the Linux boot one.
What is you problem, exactly? Also, have you found a solution?

3550 port problem diagnostics

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