I'm experiencing serious problems with Linux, VIA vt82c686b IDE interface (as included on VIA KT133 (latest revisions), KT133A and newer chipsets) and IOMega ATAPI ZIP 100 drive. Error description and system information are included below. That is a known problem with this chip. Something bad happens with ATAPI there (but only for IOMega ATAPI ZIP 100 and some old CD-ROMs - I have both). Under Windows (which I don't have) you can install beta version of VIA IDE Busmaster drivers to solve this problem. I wrote to MSI (manufacturer of motherboard) and to VIA. Guys from VIA did not replied to me and from MSI they sent me Windows drivers with suggestion to try it under Linux. Is there any real solution for this problem under Linux? I'm not subscribed to this list, so please CC to me. Thanks, Stepan Roh [EMAIL PROTECTED] Error description: When writing data to IOMega ATAPI ZIP 100 drive, whole IDE interface is frozen including all programs accessing it. Unmount is impossible (even when I try to force unmount with SysRq). Following messages are written to syslog (these messages slightly differ from kernel version to kernel version (I tried 2.2.18, 2.4.2, 2.4.3) - following is from 2.4.3 when overwriting large file): Mar 31 20:26:24 penguin kernel: Filesystem panic (dev 16:44). Mar 31 20:26:24 penguin kernel: fat_free: deleting beyond EOF Mar 31 20:26:24 penguin kernel: File system has been set read-only Mar 31 20:27:47 penguin kernel: hdd: lost interrupt Mar 31 20:27:47 penguin kernel: ide-floppy: CoD != 0 in idefloppy_pc_intr Mar 31 20:27:47 penguin kernel: ide-floppy: CoD != 0 in idefloppy_pc_intr Mar 31 20:27:47 penguin kernel: hdd: ATAPI reset complete Last 4 lines are repeated as long as file is not written (this depends on file size). On 2.2.18 kernel additional set of messages similar to the one below is written: Mar 4 19:50:55 penguin kernel: file_cluster badly computed!!! 0 <> 3315 Writing speed is aprox. 1000 times slower than it was on my old computer. System information: dmesg: Linux version 2.4.3 (root@penguin) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #3 Sat Mar 31 20:12:33 CEST 2001 BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009fc00 (usable) BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved) BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved) BIOS-e820: 0000000000100000 - 000000000fff0000 (usable) BIOS-e820: 000000000fff3000 - 0000000010000000 (ACPI data) BIOS-e820: 000000000fff0000 - 000000000fff3000 (ACPI NVS) On node 0 totalpages: 65520 zone(0): 4096 pages. zone(1): 61424 pages. zone(2): 0 pages. Kernel command line: BOOT_IMAGE=linux-2.4.3 ro root=301 Initializing CPU#0 Detected 849.609 MHz processor. Console: colour VGA+ 80x50 Calibrating delay loop... 1690.82 BogoMIPS Memory: 255572k/262080k available (984k kernel code, 6120k reserved, 359k data, 180k init, 0k highmem) Dentry-cache hash table entries: 32768 (order: 6, 262144 bytes) Buffer-cache hash table entries: 16384 (order: 4, 65536 bytes) Page-cache hash table entries: 65536 (order: 6, 262144 bytes) Inode-cache hash table entries: 16384 (order: 5, 131072 bytes) CPU: Before vendor init, caps: 0183f9ff c1c7f9ff 00000000, vendor = 2 CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) CPU: L2 Cache: 256K (64 bytes/line) CPU: After vendor init, caps: 0183f9ff c1c7f9ff 00000000 00000000 CPU: After generic, caps: 0183f9ff c1c7f9ff 00000000 00000000 CPU: Common caps: 0183f9ff c1c7f9ff 00000000 00000000 CPU: AMD Athlon(tm) Processor stepping 02 Enabling fast FPU save and restore... done. Checking 'hlt' instruction... OK. POSIX conformance testing by UNIFIX PCI: PCI BIOS revision 2.10 entry at 0xfb260, last bus=1 PCI: Using configuration type 1 PCI: Probing PCI hardware PCI: Bus master Pipeline request disabled Unknown bridge resource 0: assuming transparent Unknown bridge resource 1: assuming transparent Unknown bridge resource 2: assuming transparent PCI: Using IRQ router VIA [1106/0686] at 00:07.0 Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Starting kswapd v1.8 pty: 256 Unix98 ptys configured block: queued sectors max/low 169826kB/56608kB, 512 slots per queue RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize Uniform Multi-Platform E-IDE driver Revision: 6.31 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx VP_IDE: IDE controller on PCI bus 00 dev 39 VP_IDE: chipset revision 6 VP_IDE: not 100% native mode: will probe irqs later ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci00:07.1 ide0: BM-DMA at 0xc000-0xc007, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0xc008-0xc00f, BIOS settings: hdc:pio, hdd:pio hda: IBM-DTLA-307030, ATA DISK drive hdc: BCD-8X 1996-09-04, ATAPI CD/DVD-ROM drive hdd: IOMEGA ZIP 100 ATAPI, ATAPI FLOPPY drive hdc: set_drive_speed_status: status=0x51 { DriveReady SeekComplete Error } hdc: set_drive_speed_status: error=0xd1 ide1: Drive 0 didn't accept speed setting. Oh, well. ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15 hda: 60036480 sectors (30739 MB) w/1916KiB Cache, CHS=3737/255/63, UDMA(100) hdc: ATAPI 2X CD-ROM drive, 240kB Cache Uniform CD-ROM driver Revision: 3.12 hdd: 98304kB, 96/64/32 CHS, 4096 kBps, 512 sector size, 2941 rpm Partition check: hda: hda1 hda2 hda3 Floppy drive(s): fd0 is 1.44M FDC 0 is a post-1991 82077 loop: loaded (max 8 devices) Serial driver version 5.05 (2000-12-13) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled ttyS00 at 0x03f8 (irq = 4) is a 16550A ttyS01 at 0x02f8 (irq = 3) is a 16550A NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP, IGMP IP: routing cache hash table of 2048 buckets, 16Kbytes TCP: Hash tables configured (established 16384 bind 16384) NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. VFS: Mounted root (ext2 filesystem) readonly. Freeing unused kernel memory: 180k freed Adding Swap: 248996k swap-space (priority -1) ne2k-pci.c:v1.02 10/19/2000 D. Becker/P. Gortmaker http://www.scyld.com/network/ne2k-pci.html PCI: Found IRQ 10 for device 00:09.0 IRQ routing conflict in pirq table for device 00:07.5 eth0: RealTek RTL-8029 found at 0xe000, IRQ 10, 00:00:B4:A4:67:80. /proc/pci: PCI devices found: Bus 0, device 0, function 0: Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 2). Prefetchable 32 bit memory at 0xd0000000 [0xd3ffffff]. Bus 0, device 1, function 0: PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP] (rev 0). Master Capable. No bursts. Min Gnt=4. Bus 0, device 7, function 0: ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 64). Bus 0, device 7, function 1: IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 6). Master Capable. Latency=32. I/O at 0xc000 [0xc00f]. Bus 0, device 7, function 2: USB Controller: VIA Technologies, Inc. UHCI USB (rev 22). IRQ 5. Master Capable. Latency=32. I/O at 0xc400 [0xc41f]. Bus 0, device 7, function 3: USB Controller: VIA Technologies, Inc. UHCI USB (#2) (rev 22). IRQ 5. Master Capable. Latency=32. I/O at 0xc800 [0xc81f]. Bus 0, device 7, function 4: Host bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 64). IRQ 9. Bus 0, device 7, function 5: Multimedia audio controller: VIA Technologies, Inc. AC97 Audio Controller (rev 80). IRQ 11. I/O at 0xcc00 [0xccff]. I/O at 0xd000 [0xd003]. I/O at 0xd400 [0xd403]. Bus 0, device 8, function 0: VGA compatible controller: ATI Technologies Inc 264VT [Mach64 VT] (rev 72). Non-prefetchable 32 bit memory at 0xd4000000 [0xd4ffffff]. I/O at 0xdc00 [0xdcff]. Bus 0, device 9, function 0: Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8029(AS) (rev 0). IRQ 10. I/O at 0xe000 [0xe01f]. /proc/ide/via: ----------VIA BusMastering IDE Configuration---------------- Driver Version: 3.20 South Bridge: VIA vt82c686b Revision: ISA 0x40 IDE 0x6 BM-DMA base: 0xc000 PCI clock: 33MHz Master Read Cycle IRDY: 0ws Master Write Cycle IRDY: 0ws BM IDE Status Register Read Retry: yes Max DRDY Pulse Width: No limit -----------------------Primary IDE-------Secondary IDE------ Read DMA FIFO flush: yes yes End Sector FIFO flush: no no Prefetch Buffer: no no Post Write Buffer: no no Enabled: yes yes Simplex only: no no Cable Type: 80w 40w -------------------drive0----drive1----drive2----drive3----- Transfer Mode: UDMA PIO PIO PIO Address Setup: 30ns 120ns 30ns 30ns Cmd Active: 90ns 90ns 90ns 90ns Cmd Recovery: 30ns 30ns 90ns 90ns Data Active: 90ns 330ns 90ns 90ns Data Recovery: 30ns 270ns 90ns 90ns Cycle Time: 20ns 50ns 90ns 90ns Transfer Rate: 100.0MB/s 40.0MB/s 22.2MB/s 22.2MB/s - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/