Comment 2 for bug 40929

More info regarding failed resume attempts: I can most of the time perform read accesses, but for some reason the system believes that my filesystems are mounted readonly:
gpothier@tadzim:~$ touch t
touch: cannot touch `t': Read-only file system
gpothier@tadzim:~$ pwd
/home/gpothier
gpothier@tadzim:~$ mount
/dev/sda6 on / type reiserfs (rw,noatime,notail)
proc on /proc type proc (rw)
/sys on /sys type sysfs (rw)
varrun on /var/run type tmpfs (rw)
varlock on /var/lock type tmpfs (rw)
procbususb on /proc/bus/usb type usbfs (rw)
udev on /dev type tmpfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
devshm on /dev/shm type tmpfs (rw)
lrm on /lib/modules/2.6.15-21-686/volatile type tmpfs (rw)
/dev/sda7 on /home type reiserfs (rw,noatime)
/dev/sda1 on /windows type vfat (rw)

Trying to reset the drive:
gpothier@tadzim:~$ sudo hdparm -w /dev/sda

/dev/sda:
 HDIO_DRIVE_RESET failed: No such device

And here are the messages I got on resume in the log:
Apr 24 09:32:04 tadzim kernel: [4312132.815000] Freezing cpus ...
Apr 24 09:32:04 tadzim kernel: [4312132.815000] Stopping tasks: ===================================================================================|
Apr 24 09:32:04 tadzim kernel: [4312133.371000] ACPI: PCI interrupt for device 0000:03:01.0 disabled
Apr 24 09:32:04 tadzim kernel: [4312135.170000] ACPI: PCI interrupt for device 0000:01:00.0 disabled
Apr 24 09:32:04 tadzim kernel: [4312135.170000] ACPI: PCI interrupt for device 0000:00:1f.2 disabled
Apr 24 09:32:04 tadzim kernel: [4312135.222000] ACPI: PCI interrupt for device 0000:00:1e.2 disabled
Apr 24 09:32:04 tadzim kernel: [4312135.222000] ACPI: PCI interrupt for device 0000:00:1d.7 disabled
Apr 24 09:32:04 tadzim kernel: [4312135.247000] ACPI: PCI interrupt for device 0000:00:1d.3 disabled
Apr 24 09:32:04 tadzim kernel: [4312135.247000] ACPI: PCI interrupt for device 0000:00:1d.2 disabled
Apr 24 09:32:04 tadzim kernel: [4312135.247000] ACPI: PCI interrupt for device 0000:00:1d.1 disabled
Apr 24 09:32:04 tadzim kernel: [4312135.247000] ACPI: PCI interrupt for device 0000:00:1d.0 disabled
Apr 24 09:32:04 tadzim kernel: [4314205.247000] ACPI: PCI Interrupt 0000:00:01.0[A] -> GSI 16 (level, low) -> IRQ 169
Apr 24 09:32:04 tadzim kernel: [4314205.247000] ACPI: PCI Interrupt 0000:00:1c.0[A] -> GSI 16 (level, low) -> IRQ 169
Apr 24 09:32:04 tadzim kernel: [4314205.247000] ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 16 (level, low) -> IRQ 169
Apr 24 09:32:04 tadzim kernel: [4314205.247000] PCI: Enabling device 0000:00:1d.1 (0000 -> 0001)
Apr 24 09:32:04 tadzim kernel: [4314205.247000] ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 17 (level, low) -> IRQ 209
Apr 24 09:32:04 tadzim kernel: [4314205.247000] PCI: Enabling device 0000:00:1d.2 (0000 -> 0001)
Apr 24 09:32:04 tadzim kernel: [4314205.247000] ACPI: PCI Interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 217
Apr 24 09:32:04 tadzim kernel: [4314205.247000] PCI: Enabling device 0000:00:1d.3 (0000 -> 0001)
Apr 24 09:32:04 tadzim kernel: [4314205.247000] ACPI: PCI Interrupt 0000:00:1d.3[D] -> GSI 19 (level, low) -> IRQ 177
Apr 24 09:32:04 tadzim kernel: [4314205.295000] ACPI: PCI Interrupt 0000:00:1d.7[A] -> GSI 16 (level, low) -> IRQ 169
Apr 24 09:32:04 tadzim kernel: [4314205.299000] ehci_hcd 0000:00:1d.7: debug port 1
Apr 24 09:32:04 tadzim kernel: [4314205.303000] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
Apr 24 09:32:04 tadzim kernel: [4314205.303000] ACPI: PCI Interrupt 0000:00:1e.2[A] -> GSI 16 (level, low) -> IRQ 169
Apr 24 09:32:04 tadzim kernel: [4314205.594000] ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 17 (level, low) -> IRQ 209
Apr 24 09:32:04 tadzim kernel: [4314205.594000] ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 169
Apr 24 09:32:04 tadzim kernel: [4314205.616000] ACPI: PCI Interrupt 0000:03:01.0[A] -> GSI 19 (level, low) -> IRQ 177
Apr 24 09:32:04 tadzim kernel: [4314206.560000] ata2: dev 0 configured for UDMA/33
Apr 24 09:32:04 tadzim kernel: [4314206.847000] Restarting tasks...<6>sd 0:0:0:0: SCSI error: return code = 0x40000
Apr 24 09:32:04 tadzim kernel: [4314207.376000] end_request: I/O error, dev sda, sector 33396150
Apr 24 09:32:04 tadzim kernel: [4314207.376000] sd 0:0:0:0: SCSI error: return code = 0x40000
Apr 24 09:32:04 tadzim kernel: [4314207.376000] end_request: I/O error, dev sda, sector 33530278
Apr 24 09:32:04 tadzim kernel: [4314207.376000] sd 0:0:0:0: SCSI error: return code = 0x40000
Apr 24 09:32:04 tadzim kernel: [4314207.376000] end_request: I/O error, dev sda, sector 33318022
Apr 24 09:32:04 tadzim kernel: [4314207.376000] sd 0:0:0:0: SCSI error: return code = 0x40000
Apr 24 09:32:04 tadzim kernel: [4314207.376000] end_request: I/O error, dev sda, sector 33317982
Apr 24 09:32:04 tadzim kernel: [4314207.376000] sd 0:0:0:0: SCSI error: return code = 0x40000
Apr 24 09:32:04 tadzim Apr 24 09:32:04 tadzim Apr 24 09:32:04 tadzim Apr 24 09:32:04