Hello folks, following up to this bugreport as I experience similar problems... I have an ASUS P2B-S mainboard featuring an Adaptec AIC-7890 Ultra2 chipset with a single device connected, a TEAC CD-R55S cd-writer, both working reliably ever since I bought them in 1998. The transport setting are as follows: | Adaptec AIC7xxx driver version: 6.2.36 | Adaptec aic7890/91 Ultra2 SCSI adapter | aic7890/91: Ultra2 Wide Channel A, SCSI Id=7, 32/253 SCBs | Allocated SCBs: 4, SG List Length: 128 | | Serial EEPROM: | 0x01bb 0x01bb 0x01bb 0x03f8 0x01f8 0x01bb 0x01bb 0x01bb | 0x01bb 0x01bb 0x01bb 0x01bb 0x01bb 0x01bb 0x01bb 0x01bb | 0x18a6 0x1c5e 0x2807 0x3010 0x0300 0xffff 0xffff 0xffff | 0xffff 0xffff 0xffff 0xffff 0xffff 0xffff 0x0300 0xb140 | | Target 0 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 1 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 2 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 3 Negotiation Settings | User: 20.000MB/s transfers (10.000MHz, offset 127, 16bit) (I had an old CD-ROM drive here, but it finally broke a few weeks ago.) | Target 4 Negotiation Settings | User: 10.000MB/s transfers (5.000MHz, offset 127, 16bit) | Goal: 10.000MB/s transfers (10.000MHz, offset 15) | Curr: 10.000MB/s transfers (10.000MHz, offset 15) | Channel A Target 4 Lun 0 Settings | Commands Queued 48 | Commands Active 0 | Command Openings 1 | Max Tagged Openings 0 | Device Queue Frozen Count 0 | Target 5 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 6 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 7 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 8 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 9 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 10 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 11 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 12 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 13 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 14 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) | Target 15 Negotiation Settings | User: 80.000MB/s transfers (40.000MHz, offset 127, 16bit) Kernels up to 2.6.13.3 worked just fine (thanks guys!). However, when using kernel source 2.6.14.3 from kernel.org, 2.6.14-4 or 2.6.14-5 from Debian Sid (the latter both with and without James' patch, I just naively assumed it might help) the freshly-built kernel will allow me to mount any discs just fine, but when I start a CD recording program (k3b in my case) it won't come up at first, only to claim no writer device has been found later on. During this the syslog shows: | Dec 12 17:40:04 live k3b: resmgr: communication failure: No such file or directory | Dec 12 17:41:04 live kernel: scsi0:0:4:0: Attempting to queue an ABORT message | Dec 12 17:41:04 live kernel: CDB: 0x12 0x0 0x0 0x0 0x24 0x0 0x0 0x0 0x0 0x0 0x0 0x0 | Dec 12 17:41:04 live kernel: scsi0: At time of recovery, card was not paused | Dec 12 17:41:04 live kernel: >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<< | Dec 12 17:41:04 live kernel: scsi0: Dumping Card State in Command phase, at SEQADDR 0xb7 | Dec 12 17:41:04 live kernel: Card was paused | Dec 12 17:41:04 live kernel: ACCUM = 0x80, SINDEX = 0xa0, DINDEX = 0xe4, ARG_2 = 0x0 | Dec 12 17:41:04 live kernel: HCNT = 0xc SCBPTR = 0x0 | Dec 12 17:41:04 live kernel: SCSISIGI[0x44]:(BSYI|IOI) ERROR[0x0] SCSIBUSL[0x20] | Dec 12 17:41:04 live kernel: LASTPHASE[0x80]:(CDI) SCSISEQ[0x12]:(ENAUTOATNP|ENRSELI) | Dec 12 17:41:04 live kernel: SBLKCTL[0x6]:(SELWIDE|ENAB20) SCSIRATE[0x18]:(SINGLE_EDGE) | Dec 12 17:41:04 live kernel: SEQCTL[0x10]:(FASTMODE) SEQ_FLAGS[0x0] SSTAT0[0x0] | Dec 12 17:41:04 live kernel: SSTAT1[0x3]:(REQINIT|PHASECHG) SSTAT2[0x40]:(SHVALID) | Dec 12 17:41:04 live kernel: SSTAT3[0xf]:(OFFCNT) SIMODE0[0x8]:(ENSWRAP) SIMODE1[0xac]:(ENSCSIPERR|ENBUSFREE|ENSCSIRST|ENSELTIMO) | Dec 12 17:41:04 live kernel: SXFRCTL0[0x80]:(DFON) DFCNTRL[0x24]:(DIRECTION|SCSIEN) | Dec 12 17:41:04 live kernel: DFSTATUS[0x80]:(PRELOAD_AVAIL) | Dec 12 17:41:04 live kernel: STACK: 0x0 0x167 0x17d 0x35 | Dec 12 17:41:04 live kernel: SCB count = 4 | Dec 12 17:41:04 live kernel: Kernel NEXTQSCB = 3 | Dec 12 17:41:04 live kernel: Card NEXTQSCB = 3 | Dec 12 17:41:04 live kernel: QINFIFO entries: | Dec 12 17:41:04 live kernel: Waiting Queue entries: | Dec 12 17:41:04 live kernel: Disconnected Queue entries: | Dec 12 17:41:04 live kernel: QOUTFIFO entries: | Dec 12 17:41:04 live kernel: Sequencer Free SCB List: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | Dec 12 17:41:04 live kernel: Sequencer SCB Info: | Dec 12 17:41:04 live kernel: 0 SCB_CONTROL[0x40]:(DISCENB) SCB_SCSIID[0x47] SCB_LUN[0x0] | Dec 12 17:41:04 live kernel: SCB_TAG[0x2] | Dec 12 17:41:04 live kernel: 1 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) | Dec 12 17:41:04 live kernel: SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] ...now identically counting up from 2 to 30... | Dec 12 17:41:04 live kernel: 31 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) | Dec 12 17:41:04 live kernel: SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] | Dec 12 17:41:04 live kernel: Pending list: | Dec 12 17:41:04 live kernel: 2 SCB_CONTROL[0x40]:(DISCENB) SCB_SCSIID[0x47] SCB_LUN[0x0] | Dec 12 17:41:04 live kernel: Kernel Free SCB list: 1 0 | Dec 12 17:41:04 live kernel: Untagged Q(4): 2 | Dec 12 17:41:04 live kernel: | Dec 12 17:41:04 live kernel: <<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>> | Dec 12 17:41:04 live kernel: scsi0:0:4:0: Device is active, asserting ATN | Dec 12 17:41:04 live kernel: Recovery code sleeping | Dec 12 17:41:09 live kernel: Recovery code awake | Dec 12 17:41:09 live kernel: Timer Expired | Dec 12 17:41:09 live kernel: aic7xxx_abort returns 0x2003 | Dec 12 17:41:09 live kernel: scsi0:0:4:0: Attempting to queue a TARGET RESET message | Dec 12 17:41:09 live kernel: CDB: 0x12 0x0 0x0 0x0 0x24 0x0 0x0 0x0 0x0 0x0 0x0 0x0 | Dec 12 17:41:09 live kernel: aic7xxx_dev_reset returns 0x2003 | Dec 12 17:41:09 live kernel: Recovery SCB completes | Dec 12 17:41:19 live kernel: target0:0:4: FAST-10 SCSI 10.0 MB/s ST (100 ns, offset 15) | Dec 12 17:42:19 live kernel: scsi0:0:4:0: Attempting to queue an ABORT message | Dec 12 17:42:19 live kernel: CDB: 0x12 0x0 0x0 0x0 0x24 0x0 0x0 0x0 0x0 0x0 0x0 0x0 | Dec 12 17:42:19 live kernel: scsi0: At time of recovery, card was not paused | Dec 12 17:42:19 live kernel: >>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<< | Dec 12 17:42:19 live kernel: scsi0: Dumping Card State in Command phase, at SEQADDR 0xb7 | Dec 12 17:42:19 live kernel: Card was paused | Dec 12 17:42:19 live kernel: ACCUM = 0x80, SINDEX = 0xa0, DINDEX = 0xe4, ARG_2 = 0x0 | Dec 12 17:42:19 live kernel: HCNT = 0xc SCBPTR = 0x0 | Dec 12 17:42:19 live kernel: SCSISIGI[0x44]:(BSYI|IOI) ERROR[0x0] SCSIBUSL[0x20] | Dec 12 17:42:19 live kernel: LASTPHASE[0x80]:(CDI) SCSISEQ[0x12]:(ENAUTOATNP|ENRSELI) | Dec 12 17:42:19 live kernel: SBLKCTL[0x6]:(SELWIDE|ENAB20) SCSIRATE[0x18]:(SINGLE_EDGE) | Dec 12 17:42:19 live kernel: SEQCTL[0x10]:(FASTMODE) SEQ_FLAGS[0x0] SSTAT0[0x0] | Dec 12 17:42:19 live kernel: SSTAT1[0x3]:(REQINIT|PHASECHG) SSTAT2[0x40]:(SHVALID) | Dec 12 17:42:19 live kernel: SSTAT3[0xf]:(OFFCNT) SIMODE0[0x8]:(ENSWRAP) SIMODE1[0xac]:(ENSCSIPERR|ENBUSFREE|ENSCSIRST|ENSELTIMO) | Dec 12 17:42:19 live kernel: SXFRCTL0[0x80]:(DFON) DFCNTRL[0x24]:(DIRECTION|SCSIEN) | Dec 12 17:42:19 live kernel: DFSTATUS[0x80]:(PRELOAD_AVAIL) | Dec 12 17:42:19 live kernel: STACK: 0x0 0x167 0x17d 0x35 | Dec 12 17:42:19 live kernel: SCB count = 4 | Dec 12 17:42:19 live kernel: Kernel NEXTQSCB = 2 | Dec 12 17:42:19 live kernel: Card NEXTQSCB = 2 | Dec 12 17:42:19 live kernel: QINFIFO entries: | Dec 12 17:42:19 live kernel: Waiting Queue entries: | Dec 12 17:42:19 live kernel: Disconnected Queue entries: | Dec 12 17:42:19 live kernel: QOUTFIFO entries: | Dec 12 17:42:19 live kernel: Sequencer Free SCB List: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | Dec 12 17:42:19 live kernel: Sequencer SCB Info: | Dec 12 17:42:19 live kernel: 0 SCB_CONTROL[0x40]:(DISCENB) SCB_SCSIID[0x47] SCB_LUN[0x0] | Dec 12 17:42:19 live kernel: SCB_TAG[0x3] | Dec 12 17:42:19 live kernel: 1 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) | Dec 12 17:42:19 live kernel: SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] ...and now repeating this in a loop. Well, I severely lack knowledge of kernel internals, so I'm quite lost now. Please tell me what further information you might need, and I will provide them. Also I'm willing to test any patches that are thrown at me, so please bear with me. :) Cheers, Flo
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