On Wed, May 12, 2010 at 5:52 PM, John wrote: > Thanks for the help Lisa. The card worked for about a year without one > issue so I figured it was a hardware issue. I know one of my updates could > have caused an issue. I haven't added any new hardware as well so I don't > think it's not an IRQ issue. > > > >What is your distro and kernel version? Are your kernel patches up to > date? > I'm running two versions of Ubuntu with one being 10.04 for my home PC and > 9.10 for my mythtv. Ultimately, I need the additional serial port in my > mythtv PC. Kernels are 2.6.31-20-generic for 9.10 and 2.6.32-22-generic for > 10.04. I tried the new serial card in both PCs and it doesn't work in > either. > > > >What is the name and serial number of the card? Have you researched > drivers for your distro? > Info on my new card is very bleak as I've found nothing on the numbers > given in lspci 5372:6872. > > --- On *Tue, 5/11/10, Lisa Kachold * wrote: > > > From: Lisa Kachold > Subject: Re: Udev rules and built-in kernel modules > To: "Main PLUG discussion list" > Date: Tuesday, May 11, 2010, 2:54 AM > > > > > On Sun, May 9, 2010 at 3:50 PM, John > > wrote: > >> My computer setup needs two RS232 (serial) interfaces. I have the >> motherboard one and I also have a separate PCI card (4348:3253). The >> separate card has been going on the fritz since sometimes it just stops >> working. I bought another PCI serial card and I thought I could swap them >> out. Unfortunately, the new card (5372:6872) doesn't load the serial kernel >> driver like the old card. When I do a lspci -v for the old card it says >> kernel driver=serial and for the new card nothing is listed. I do an udevadm >> for both and the old one says serial and the new one says serial8250. Not >> sure why it doesn't say serial8250 when I do a lspci -v for the new card. >> Can you write a udev rule to load the correct built-in driver? Also, I did a >> cat on the modules.builtin and it shows serial_core.ko, 8250.ko, >> 8250_pnp.ko, 8250_pci.ko. I thought I would see a serial.ko and >> serial8250.ko as well. Any suggestions or am I out of luck on the serial >> card? >> >> An intermittant PCI card issue could actually be an IRQ or DMA, UART > issue. What are your bios settings? Have you verified that there is not a > conflict? > > There is a known UART bug (registered by Linus Torvalds) in Serial8250 > fix-*serial-8250*-UART_BUG_TXEN-test: > > What is your distro and kernel version? Are your kernel patches up to > date? > > What is the name and serial number of the card? Have you researched > drivers for your distro? > > > -- > Office: (480)307-8707 > AT&T: (503)754-4452 > Systems Engineer > www.ivedaxpress.com > > > > > > > > > > > > > > > -----Inline Attachment Follows----- > > > > Does lspci look like this? 01:08.0 Communication controller: Device 5372:6872 (rev 01) Subsystem: LSI Logic / Symbios Logic Device 0002 Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- SERR-