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    SubjectRe: Linux 2.4.21pre4-ac2 : hangs at flushing hda hdc
    On Wed, 5 Feb 2003, about 2.4.21-pre4-ac2, Jurriaan wrote:
    > Some of these may be responsible for something new: my system hangs at shutdown,
    > saying 'flushing ide devices: hda hdc'. This didn't happen with
    > 2.4.21pre3-ac5. hdc is a cdwriter, used as ide-scsi.

    same thing for me:
    2.4.21-pre4-ac1 seems the most stable ever for my hardware (not a single
    hang or freeze, any other kernel would freeze more or less once a day)
    but still needs longer testing for validation regarding my troubles.

    2.4.21-pre4-ac2 systematically hangs at shutdown/reboot ending with:
    flushing ide devices: hda hdc

    here below my lspci / hdparm -I / /proc/interrupts / /proc/pci

    **************************************************************************

    3 [15:54] sjd@mint:/home/jd# lspci
    00:00.0 Host bridge: Intel Corp. 82845G/GL [Brookdale-G] Chipset Host Bridge (rev 02)
    00:01.0 PCI bridge: Intel Corp. 82845G/GL [Brookdale-G] Chipset AGP Bridge (rev 02)
    00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB PCI Bridge (rev 82)
    00:1f.0 ISA bridge: Intel Corp. 82801DB ISA Bridge (LPC) (rev 02)
    00:1f.1 IDE interface: Intel Corp. 82801DB ICH4 IDE (rev 02)
    00:1f.5 Multimedia audio controller: Intel Corp. 82801DB AC'97 Audio (rev 02)
    01:00.0 VGA compatible controller: nVidia Corporation NV25 [GeForce4 Ti4200] (rev a3)
    02:03.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller (rev 80)
    02:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)

    **************************************************************************

    4 [15:55] sjd@mint:/home/jd# hdparm -I /dev/hda

    /dev/hda:

    non-removable ATA device, with non-removable media
    Model Number: Maxtor 6Y120P0
    Serial Number: Y40FKPWE
    Firmware Revision: YAR41VW0
    Standards:
    Supported: 1 2 3 4 5 6 7
    Likely used: 7
    Configuration:
    Logical max current
    cylinders 16383 16383
    heads 16 16
    sectors/track 63 63
    bytes/track: 0 (obsolete)
    bytes/sector: 0 (obsolete)
    current sector capacity: 16514064
    LBA user addressable sectors = 240121728
    Capabilities:
    LBA, IORDY(can be disabled)
    Buffer size: 7936.0kB ECC bytes: 57 Queue depth: 1
    Standby timer values: spec'd by standard, no device specific minimum
    r/w multiple sector transfer: Max = 16 Current = 16
    DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
    Cycle time: min=120ns recommended=120ns
    PIO: pio0 pio1 pio2 pio3 pio4
    Cycle time: no flow control=120ns IORDY flow control=120ns
    Commands/features:
    Enabled Supported:
    * NOP cmd
    * READ BUFFER cmd
    * WRITE BUFFER cmd
    * Host Protected Area feature set
    * look-ahead
    * write cache
    * Power Management feature set
    Security Mode feature set
    SMART feature set
    SET MAX security extension
    Advanced Power Management feature set
    * DOWNLOAD MICROCODE cmd
    Security:
    Master password revision code = 65534
    supported
    not enabled
    not locked
    not frozen
    not expired: security count
    not supported: enhanced erase
    HW reset results:
    CBLID- above Vih
    Device num = 0 determined by the jumper
    Checksum: correct

    **************************************************************************

    5 [15:55] sjd@mint:/home/jd# hdparm -I /dev/hdc

    /dev/hdc:

    ATAPI CD-ROM, with removable media
    Model Number: JLMS DVD-ROM LTD-166S
    Serial Number:
    Firmware Revision: DS0B
    Standards:
    Used: ATAPI for CD-ROMs, SFF-8020i, r2.5
    Supported: CD-ROM ATAPI-2
    Configuration:
    DRQ response: 50us.
    Packet size: 12 bytes
    Capabilities:
    LBA, IORDY(cannot be disabled)
    DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3
    Cycle time: min=120ns recommended=120ns
    PIO: pio0 pio1 pio2 pio3 pio4
    Cycle time: no flow control=227ns IORDY flow control=120ns

    **************************************************************************

    6 [15:56] sjd@mint:/home/jd# cat /proc/interrupts
    CPU0
    0: 62486 XT-PIC timer
    1: 3195 XT-PIC keyboard
    2: 0 XT-PIC cascade
    5: 11820 XT-PIC eth0, Intel ICH4
    10: 1 XT-PIC ohci1394
    11: 45676 XT-PIC nvidia
    12: 15124 XT-PIC PS/2 Mouse
    14: 11519 XT-PIC ide0
    15: 16 XT-PIC ide1
    NMI: 0
    LOC: 62452
    ERR: 0
    MIS: 0

    **************************************************************************

    7 [15:56] sjd@mint:/home/jd# cat /proc/pci
    PCI devices found:
    Bus 0, device 0, function 0:
    Host bridge: Intel Corp. 82845G/GL [Brookdale-G] Chipset Host Bridge (rev 2).
    Prefetchable 32 bit memory at 0xf0000000 [0xf7ffffff].
    Bus 0, device 1, function 0:
    PCI bridge: Intel Corp. 82845G/GL [Brookdale-G] Chipset AGP Bridge (rev 2).
    Master Capable. Latency=64. Min Gnt=8.
    Bus 0, device 30, function 0:
    PCI bridge: Intel Corp. 82801BA/CA/DB PCI Bridge (rev 130).
    Master Capable. No bursts. Min Gnt=6.
    Bus 0, device 31, function 0:
    ISA bridge: Intel Corp. 82801DB ISA Bridge (LPC) (rev 2).
    Bus 0, device 31, function 1:
    IDE interface: Intel Corp. 82801DB ICH4 IDE (rev 2).
    IRQ 9.
    I/O at 0xf000 [0xf00f].
    Non-prefetchable 32 bit memory at 0x10000000 [0x100003ff].
    Bus 0, device 31, function 5:
    Multimedia audio controller: Intel Corp. 82801DB AC'97 Audio (rev 2).
    IRQ 5.
    I/O at 0xa800 [0xa8ff].
    I/O at 0xa400 [0xa43f].
    Non-prefetchable 32 bit memory at 0xe4000000 [0xe40001ff].
    Non-prefetchable 32 bit memory at 0xe3800000 [0xe38000ff].
    Bus 1, device 0, function 0:
    VGA compatible controller: nVidia Corporation NV25 [GeForce4 Ti4200] (rev 163).
    IRQ 11.
    Master Capable. Latency=248. Min Gnt=5.Max Lat=1.
    Non-prefetchable 32 bit memory at 0xe6000000 [0xe6ffffff].
    Prefetchable 32 bit memory at 0xe8000000 [0xefffffff].
    Prefetchable 32 bit memory at 0xe7800000 [0xe787ffff].
    Bus 2, device 3, function 0:
    FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller (rev 128).
    IRQ 10.
    Master Capable. Latency=32. Max Lat=32.
    Non-prefetchable 32 bit memory at 0xe5000000 [0xe50007ff].
    I/O at 0xb800 [0xb87f].
    Bus 2, device 11, function 0:
    Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 16).
    IRQ 5.
    Master Capable. Latency=32. Min Gnt=32.Max Lat=64.
    I/O at 0xb400 [0xb4ff].
    Non-prefetchable 32 bit memory at 0xe4800000 [0xe48000ff].

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