[BRLTTY] acpitools -s

[Lars Bjørndal]

I use Brltty on an IBM Thinkpad X31 with docking. I've connected the
braille display to /dev/ttyS0. If I suspend the system with acpitools
-s, and then wake it up, I cannot get any response from my braille
display. If I then stop brltty and start it again, I get the
following error messages in the log:

May 30 08:06:51 lap brltty[1929]: starting.
May 30 08:06:51 lap brltty[1929]: BRLTTY 3.7
May 30 08:06:51 lap brltty[1931]: Linux Screen Driver
May 30 08:06:52 lap brltty[1931]: Input byte missing at offset 1.

After wake up, before restarting brltty, I get the following in the
log:

May 30 08:05:59 lap kernel: Stopping tasks: ============================================|
May 30 08:05:59 lap kernel: pnp: Device 00:0b disabled.
May 30 08:05:59 lap kernel: pnp: Device 00:0a disabled.
May 30 08:05:59 lap kernel: Intel machine check architecture supported.
May 30 08:05:59 lap kernel: Intel machine check reporting enabled on CPU#0.
May 30 08:05:59 lap kernel: PCI: Enabling device 0000:00:1d.0 (0000 -> 0001)
May 30 08:05:59 lap kernel: ACPI: PCI Interrupt 0000:00:1d.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11
May 30 08:05:59 lap kernel: usb usb1: root hub lost power or was reset
May 30 08:05:59 lap kernel: PCI: Enabling device 0000:00:1d.1 (0000 -> 0001)
May 30 08:05:59 lap kernel: ACPI: PCI Interrupt 0000:00:1d.1[B] -> Link [LNKD] -> GSI 11 (level, low) -> IRQ 11
May 30 08:05:59 lap kernel: usb usb2: root hub lost power or was reset
May 30 08:05:59 lap kernel: PCI: Enabling device 0000:00:1d.2 (0000 -> 0001)
May 30 08:05:59 lap kernel: ACPI: PCI Interrupt 0000:00:1d.2[C] -> Link [LNKC] -> GSI 11 (level, low) -> IRQ 11
May 30 08:05:59 lap kernel: usb usb3: root hub lost power or was reset
May 30 08:05:59 lap kernel: PCI: Enabling device 0000:00:1d.7 (0000 -> 0002)
May 30 08:05:59 lap kernel: ACPI: PCI Interrupt 0000:00:1d.7[D] -> Link [LNKH] -> GSI 11 (level, low) -> IRQ 11
May 30 08:05:59 lap kernel: usb usb4: root hub lost power or was reset
May 30 08:05:59 lap kernel: ehci_hcd 0000:00:1d.7: debug port 1
May 30 08:05:59 lap kernel: ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
May 30 08:05:59 lap kernel: ACPI: PCI Interrupt 0000:00:1f.1[A] -> Link [LNKC] -> GSI 11 (level, low) -> IRQ 11
May 30 08:05:59 lap kernel: ACPI: PCI Interrupt 0000:00:1f.5[B] -> Link [LNKB] -> GSI 11 (level, low) -> IRQ 11
May 30 08:05:59 lap kernel: ACPI: PCI Interrupt 0000:00:1f.6[B] -> Link [LNKB] -> GSI 11 (level, low) -> IRQ 11
May 30 08:05:59 lap kernel: ACPI: PCI Interrupt 0000:02:00.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11
May 30 08:05:59 lap kernel: ACPI: PCI Interrupt 0000:02:00.1[B] -> Link [LNKB] -> GSI 11 (level, low) -> IRQ 11
May 30 08:05:59 lap kernel: ACPI: PCI Interrupt 0000:02:00.2[C] -> Link [LNKC] -> GSI 11 (level, low) -> IRQ 11
May 30 08:05:59 lap kernel: pnp: Device 00:07 does not supported activation.
May 30 08:05:59 lap kernel: pnp: Device 00:08 does not supported activation.
May 30 08:05:59 lap kernel: pnp: Device 00:0a activated.
May 30 08:05:59 lap kernel: pnp: Device 00:0b activated.
May 30 08:05:59 lap kernel: Restarting tasks... done

Do anyonw know how to solve this problem?

Lars