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    Subject2.6.25-rc7: Ugh.
    It is with great reluctance when I attempt moving my main "desktop"
    over to a new kernel version -- because the USB subsystem seems to
    break every single time.

    So today I tried 2.6.25-rc7 on it for the first time.
    Not good.

    It boots, but just a simple suspend/resume (RAM) was enough to kill it.
    It comes back on resume, with an X desktop again,
    but with no USB functionality -- no mouse.

    The keyboard still works, so I dropped to a console and tried:

    rmmod usbhid
    insmod usbhid

    And the console hung at 100% CPU on the insmod.
    Back to 2.6.24.3 again, for now -- I've got work to do.

    The specs of this machine have been posted with great regularity
    in the past, every new kernel revision it seems. So here we go again:

    Dell Inspiron 9400 notebook, Intel Core2Duo T7400, 2GB SDRAM.

    Suspend/Resume have worked perfectly (after kernel fixes, mostly USB)
    for all kernels in the past since 2.6.20 or so.

    Here's the /var/log/messages from the suspend/resume.
    That's it for now. I've got work to do, and I'm tired of
    seeing this break with each new revision.


    logger: /usr/local/bin/suspend.sh
    kernel: [ 107.491762] PM: Syncing filesystems ... done.
    kernel: [ 107.492274] Freezing user space processes ... (elapsed 0.00 seconds) done.
    kernel: [ 107.493016] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
    kernel: [ 107.499129] ACPI: Preparing to enter system sleep state S3
    kernel: [ 107.499656] Suspending console(s)
    kernel: [ 107.524879] b44: eth0: powering down PHY
    kernel: [ 108.011326] sd 0:0:0:0: [sda] Synchronizing SCSI cache
    kernel: [ 108.011473] sd 0:0:0:0: [sda] Stopping disk
    kernel: [ 110.058446] pciehp_suspend ENTRY
    last message repeated 2 times
    kernel: [ 110.058446] ricoh-mmc: Suspending.
    kernel: [ 110.058446] ricoh-mmc: Controller is now re-enabled.
    kernel: [ 110.058446] ACPI handle has no context!
    kernel: [ 110.058446] ACPI: PCI interrupt for device 0000:03:01.1 disabled
    kernel: [ 110.058446] ACPI handle has no context!
    kernel: [ 110.089544] ACPI: PCI interrupt for device 0000:03:00.0 disabled
    kernel: [ 110.089554] ACPI handle has no context!
    kernel: [ 110.102988] ACPI: PCI interrupt for device 0000:00:1f.2 disabled
    kernel: [ 110.116231] ACPI: PCI interrupt for device 0000:00:1d.7 disabled
    kernel: [ 110.129385] ACPI: PCI interrupt for device 0000:00:1d.3 disabled
    kernel: [ 110.129433] ACPI: PCI interrupt for device 0000:00:1d.2 disabled
    kernel: [ 110.129480] ACPI: PCI interrupt for device 0000:00:1d.1 disabled
    kernel: [ 110.129526] ACPI: PCI interrupt for device 0000:00:1d.0 disabled
    kernel: [ 110.129533] pciehp_suspend ENTRY
    kernel: [ 110.129601] pciehp_suspend ENTRY
    kernel: [ 110.129668] pciehp_suspend ENTRY
    kernel: [ 110.142697] ACPI: PCI interrupt for device 0000:00:1b.0 disabled
    kernel: [ 110.155936] Disabling non-boot CPUs ...
    kernel: [ 110.159155] CPU 1 is now offline
    kernel: [ 110.159159] SMP alternatives: switching to UP code
    kernel: [ 110.161085] CPU1 is down
    kernel: [ 110.161085] Back to C!
    kernel: [ 110.161498] Enabling non-boot CPUs ...
    kernel: [ 110.161854] SMP alternatives: switching to SMP code
    kernel: [ 110.162467] Booting processor 1/1 ip 4000
    kernel: [ 110.162471] CPU 1 irqstacks, hard=c037f000 soft=c037d000
    kernel: [ 111.314889] Initializing CPU#1
    kernel: [ 111.314889] Calibrating delay using timer specific routine.. 4321.52 BogoMIPS (lpj=7199246)
    kernel: [ 111.314889] CPU: L1 I cache: 32K, L1 D cache: 32K
    kernel: [ 111.314889] CPU: L2 cache: 4096K
    kernel: [ 111.314889] CPU: Physical Processor ID: 0
    kernel: [ 111.314889] CPU: Processor Core ID: 1
    kernel: [ 110.256366] CPU1: Intel(R) Core(TM)2 CPU T7400 @ 2.16GHz stepping 06
    kernel: [ 111.314889] CPU1 is up
    kernel: [ 111.314896] Switched to high resolution mode on CPU 1
    kernel: [ 111.349610] PM: Writing back config space on device 0000:00:01.0 at offset a (was f, writing 0)
    kernel: [ 111.349618] PM: Writing back config space on device 0000:00:01.0 at offset 3 (was 10000, writing 10010)
    kernel: [ 111.349629] PCI: Setting latency timer of device 0000:00:01.0 to 64
    kernel: [ 111.360769] PM: Writing back config space on device 0000:00:1b.0 at offset f (was 100, writing 10b)
    kernel: [ 111.360795] PM: Writing back config space on device 0000:00:1b.0 at offset 4 (was ffa7c004, writing efffc004)
    kernel: [ 111.360804] PM: Writing back config space on device 0000:00:1b.0 at offset 3 (was 0, writing 10)
    kernel: [ 111.360814] PM: Writing back config space on device 0000:00:1b.0 at offset 1 (was 100000, writing 100102)
    kernel: [ 111.360845] ACPI: PCI Interrupt 0000:00:1b.0[A] -> GSI 21 (level, low) -> IRQ 21
    kernel: [ 111.360856] PCI: Setting latency timer of device 0000:00:1b.0 to 64
    kernel: [ 111.360892] PM: Writing back config space on device 0000:00:1c.0 at offset f (was 100, writing 20100)
    kernel: [ 111.360910] PM: Writing back config space on device 0000:00:1c.0 at offset 9 (was 10001, writing 1fff1)
    kernel: [ 111.360917] PM: Writing back config space on device 0000:00:1c.0 at offset 8 (was 0, writing fff0)
    kernel: [ 111.360925] PM: Writing back config space on device 0000:00:1c.0 at offset 7 (was 0, writing 200000f0)
    kernel: [ 111.360932] PM: Writing back config space on device 0000:00:1c.0 at offset 6 (was 0, writing b0b00)
    kernel: [ 111.360944] PM: Writing back config space on device 0000:00:1c.0 at offset 3 (was 810000, writing 810010)
    kernel: [ 111.360954] PM: Writing back config space on device 0000:00:1c.0 at offset 1 (was 100000, writing 100007)
    kernel: [ 111.360982] PCI: Setting latency timer of device 0000:00:1c.0 to 64
    kernel: [ 111.360989] pciehp_resume ENTRY
    kernel: [ 111.361035] PM: Writing back config space on device 0000:00:1c.1 at offset f (was 200, writing 20200)
    kernel: [ 111.361047] PM: Writing back config space on device 0000:00:1c.1 at offset 9 (was 10001, writing 1fff1)
    kernel: [ 111.361052] PM: Writing back config space on device 0000:00:1c.1 at offset 8 (was 0, writing efc0efc0)
    kernel: [ 111.361056] PM: Writing back config space on device 0000:00:1c.1 at offset 7 (was 20000000, writing 200000f0)
    kernel: [ 111.361061] PM: Writing back config space on device 0000:00:1c.1 at offset 6 (was 0, writing c0c00)
    kernel: [ 111.361068] PM: Writing back config space on device 0000:00:1c.1 at offset 3 (was 810000, writing 810010)
    kernel: [ 111.361075] PM: Writing back config space on device 0000:00:1c.1 at offset 1 (was 100000, writing 100107)
    kernel: [ 111.361095] PCI: Setting latency timer of device 0000:00:1c.1 to 64
    kernel: [ 111.361099] pciehp_resume ENTRY
    kernel: [ 112.362047] pciehp: Device 0000:0c:00.0 already exists at c:0, cannot hot-add
    kernel: [ 112.362052] pciehp: Cannot add device 0xc:0
    kernel: [ 112.362085] PM: Writing back config space on device 0000:00:1c.3 at offset f (was 400, writing 20400)
    kernel: [ 112.362102] PM: Writing back config space on device 0000:00:1c.3 at offset 9 (was 10001, writing e011e001)
    kernel: [ 112.362110] PM: Writing back config space on device 0000:00:1c.3 at offset 8 (was 0, writing efb0efa0)
    kernel: [ 112.362117] PM: Writing back config space on device 0000:00:1c.3 at offset 7 (was 0, writing d0d0)
    kernel: [ 112.362125] PM: Writing back config space on device 0000:00:1c.3 at offset 6 (was 0, writing e0d00)
    kernel: [ 112.362136] PM: Writing back config space on device 0000:00:1c.3 at offset 3 (was 810000, writing 810010)
    kernel: [ 112.362146] PM: Writing back config space on device 0000:00:1c.3 at offset 1 (was 100000, writing 100007)
    kernel: [ 112.362174] PCI: Setting latency timer of device 0000:00:1c.3 to 64
    kernel: [ 112.362181] pciehp_resume ENTRY
    kernel: [ 112.362213] ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 20 (level, low) -> IRQ 20
    kernel: [ 112.362222] PCI: Setting latency timer of device 0000:00:1d.0 to 64
    kernel: [ 112.362287] usb usb1: root hub lost power or was reset
    kernel: [ 112.362311] PCI: Enabling device 0000:00:1d.1 (0000 -> 0001)
    kernel: [ 112.362316] ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 21 (level, low) -> IRQ 21
    kernel: [ 112.362326] PCI: Setting latency timer of device 0000:00:1d.1 to 64
    kernel: [ 112.362335] PM: Writing back config space on device 0000:00:1d.1 at offset f (was 200, writing 20b)
    kernel: [ 112.362353] PM: Writing back config space on device 0000:00:1d.1 at offset 8 (was 1, writing bf61)
    kernel: [ 112.362399] usb usb2: root hub lost power or was reset
    kernel: [ 112.362421] PCI: Enabling device 0000:00:1d.2 (0000 -> 0001)
    kernel: [ 112.362426] ACPI: PCI Interrupt 0000:00:1d.2[C] -> GSI 22 (level, low) -> IRQ 22
    kernel: [ 112.362436] PCI: Setting latency timer of device 0000:00:1d.2 to 64
    kernel: [ 112.362445] PM: Writing back config space on device 0000:00:1d.2 at offset f (was 300, writing 309)
    kernel: [ 112.362464] PM: Writing back config space on device 0000:00:1d.2 at offset 8 (was 1, writing bf41)
    kernel: [ 112.362509] usb usb3: root hub lost power or was reset
    kernel: [ 112.362532] PCI: Enabling device 0000:00:1d.3 (0000 -> 0001)
    kernel: [ 112.362537] ACPI: PCI Interrupt 0000:00:1d.3[D] -> GSI 23 (level, low) -> IRQ 23
    kernel: [ 112.362547] PCI: Setting latency timer of device 0000:00:1d.3 to 64
    kernel: [ 112.362556] PM: Writing back config space on device 0000:00:1d.3 at offset f (was 400, writing 407)
    kernel: [ 112.362574] PM: Writing back config space on device 0000:00:1d.3 at offset 8 (was 1, writing bf21)
    kernel: [ 112.362619] usb usb4: root hub lost power or was reset
    kernel: [ 112.375278] ACPI: PCI Interrupt 0000:00:1d.7[A] -> GSI 20 (level, low) -> IRQ 20
    kernel: [ 112.375286] PCI: Setting latency timer of device 0000:00:1d.7 to 64
    kernel: [ 112.375379] PM: Writing back config space on device 0000:00:1e.0 at offset 9 (was 100f1, writing 1fff1)
    kernel: [ 112.375390] PM: Writing back config space on device 0000:00:1e.0 at offset 8 (was 90, writing ef90ef90)
    kernel: [ 112.375400] PM: Writing back config space on device 0000:00:1e.0 at offset 7 (was 2280e0f0, writing 228000f0)
    kernel: [ 112.375418] PM: Writing back config space on device 0000:00:1e.0 at offset 1 (was 100007, writing 100107)
    kernel: [ 112.375446] PCI: Setting latency timer of device 0000:00:1e.0 to 64
    kernel: [ 112.375495] PM: Writing back config space on device 0000:00:1f.0 at offset 1 (was 2100007, writing 2100107)
    kernel: [ 112.388552] PM: Writing back config space on device 0000:00:1f.2 at offset f (was 200, writing 205)
    kernel: [ 112.388602] ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 17 (level, low) -> IRQ 17
    kernel: [ 112.388610] PCI: Setting latency timer of device 0000:00:1f.2 to 64
    kernel: [ 112.388636] PM: Writing back config space on device 0000:00:1f.3 at offset f (was 200, writing 205)
    kernel: [ 111.330331] ata2.00: _GTF evaluation failed (AE 0x1001)
    kernel: [ 111.330331] ata2.01: _GTF evaluation failed (AE 0x1001)
    kernel: [ 112.388678] PM: Writing back config space on device 0000:00:1f.3 at offset 1 (was 2800001, writing 2800101)
    kernel: [ 112.388751] PM: Writing back config space on device 0000:01:00.0 at offset f (was 1ff, writing 104)
    kernel: [ 112.388838] PM: Writing back config space on device 0000:01:00.0 at offset 3 (was 0, writing 10)
    kernel: [ 111.330331] ata1.01: _GTF evaluation failed (AE 0x1001)
    kernel: [ 112.417656] PCI: Enabling device 0000:03:00.0 (0000 -> 0002)
    kernel: [ 112.417662] ACPI: PCI Interrupt 0000:03:00.0[A] -> GSI 17 (level, low) -> IRQ 17
    kernel: [ 112.417677] PM: Writing back config space on device 0000:03:00.0 at offset f (was 100, writing 105)
    kernel: [ 112.417702] PM: Writing back config space on device 0000:03:00.0 at offset 4 (was 0, writing ef9fe000)
    kernel: [ 112.417710] PM: Writing back config space on device 0000:03:00.0 at offset 3 (was 0, writing 4000)
    kernel: [ 112.417720] PM: Writing back config space on device 0000:03:00.0 at offset 1 (was 100002, writing 100106)
    kernel: [ 112.431706] PM: Writing back config space on device 0000:03:01.0 at offset f (was 4020100, writing 4020103)
    kernel: [ 112.431734] PM: Writing back config space on device 0000:03:01.0 at offset 4 (was 0, writing ef9fd800)
    kernel: [ 112.431742] PM: Writing back config space on device 0000:03:01.0 at offset 3 (was 800000, writing 804000)
    kernel: [ 112.431751] PM: Writing back config space on device 0000:03:01.0 at offset 1 (was 2100000, writing 2100106)
    kernel: [ 112.517139] PM: Writing back config space on device 0000:03:01.1 at offset f (was 200, writing 209)
    kernel: [ 112.517168] PM: Writing back config space on device 0000:03:01.1 at offset 4 (was 0, writing ef9fd400)
    kernel: [ 112.517176] PM: Writing back config space on device 0000:03:01.1 at offset 3 (was 800000, writing 804000)
    kernel: [ 112.517186] PM: Writing back config space on device 0000:03:01.1 at offset 1 (was 2100000, writing 2100106)
    kernel: [ 112.517211] ACPI: PCI Interrupt 0000:03:01.1[B] -> GSI 18 (level, low) -> IRQ 18
    kernel: [ 112.517234] ricoh-mmc: Resuming.
    kernel: [ 112.517245] ricoh-mmc: Controller is now disabled.
    kernel: [ 112.517259] PM: Writing back config space on device 0000:03:01.3 at offset f (was 200, writing 209)
    kernel: [ 112.517286] PM: Writing back config space on device 0000:03:01.3 at offset 4 (was 0, writing ef9fd700)
    kernel: [ 112.517298] PM: Writing back config space on device 0000:03:01.3 at offset 1 (was 2100000, writing 2100102)
    kernel: [ 112.517382] pciehp_resume ENTRY
    kernel: [ 112.517410] pciehp_resume ENTRY
    kernel: [ 111.839425] ata2.00: configured for UDMA/33
    kernel: [ 113.520191] pciehp: Device 0000:0c:00.0 already exists at c:0, cannot hot-add
    kernel: [ 113.520197] pciehp: Cannot add device 0xc:0
    kernel: [ 113.520214] pciehp_resume ENTRY
    kernel: [ 113.520461] sd 0:0:0:0: [sda] Starting disk
    kernel: [ 113.727280] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 succeeded
    kernel: [ 113.746993] ata1.00: configured for UDMA/133
    kernel: [ 113.770650] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 MB)
    kernel: [ 113.770650] sd 0:0:0:0: [sda] Write Protect is off
    kernel: [ 113.770650] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
    kernel: [ 113.770650] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
    kernel: [ 114.901667] Restarting tasks ... <6>usb 5-1: USB disconnect, address 2
    kernel: [ 114.933424] done.
    kernel: [ 115.128131] usb 5-1: new high speed USB device using ehci_hcd and address 5

    ## Note: these are "normal" and harmless on this machine,
    ## and the reason for them has never been tracked down:
    kernel: [ 115.198514] Uhhuh. NMI received for unknown reason 90 on CPU 0.
    kernel: [ 115.198519] You have some hardware problem, likely on the PCI bus.
    kernel: [ 115.198521] Dazed and confused, but trying to continue

    kernel: [ 117.690742] b44: eth0: Link is up at 100 Mbps, full duplex.
    kernel: [ 117.690750] b44: eth0: Flow control is off for TX and off for RX.
    login[3020]: (pam_unix) session opened for user root by (uid=0)
    login[4507]: ROOT LOGIN on 'tty1'
    root: reloading usbhid module
    kernel: [ 225.955054] usbcore: deregistering interface driver usbhid
    kernel: [ 225.966118] usbcore: deregistering interface driver hiddev
    root: session hung on insmod
    kernel: [ 248.875843] SysRq : Emergency Sync
    kernel: [ 248.876629] Emergency Sync complete
    kernel: [ 249.535815] SysRq : Emergency Remount R/O


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