Comment 20 for bug 1501345

yes the serial functioning is working properly thnx for ur cooperation

On Tue, Oct 20, 2015 at 1:53 PM, bouke <email address hidden> wrote:

> Seems to be fixed in 3.13.0-66.107, which is available for Ubuntu 14.04
> now.
>
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> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1501345
>
> Title:
> linux-image-3.13.0-65-generic breaks serial communication
>
> Status in linux-lts-trusty package in Ubuntu:
> Confirmed
>
> Bug description:
> Today after updating to the linux-image-3.13.0-65-generic 3.13.0-65
> Kernel on Lubuntu 14.04.3 LTS two different programs that rely on
> PySerial quit working. miniterm.py and my ROS (Robot Operating System)
> based Python node quit working.
>
> When rebooted and selected 3.13.0-63-generic via GRUB everything
> worked again.
>
> Here are the steps to create the issue with miniterm.py, note that you
> need something connected via a USB to Serial adapter for this to work.
> I am working with a Parallax Activity Board, but an Arduino should
> also exhibit the same behavior.
>
> sudo apt install linux-image-3.13.0-65-generic
> sudo apt install linux-image-extra-3.13.0-65-generic
> reboot
>
> $ miniterm.py /dev/ttyUSB0 115200
> --- Miniterm on /dev/ttyUSB0: 115200,8,N,1 ---
> --- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---
>
> --- exit ---
> Exception in thread Thread-1:
> Traceback (most recent call last):
> File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
> self.run()
> File "/usr/lib/python2.7/threading.py", line 763, in run
> self.__target(*self.__args, **self.__kwargs)
> File "/usr/bin/miniterm.py", line 220, in reader
> data = character(self.serial.read(1))
> File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line
> 460, in read
> raise SerialException('device reports readiness to read but returned
> no data (device disconnected?)')
> SerialException: device reports readiness to read but returned no data
> (device disconnected?)
>
> Reverting to the 3.13.0-63 kernel allows miniterm.py and other Python
> Serial based programs to work normally.
>
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