Timeout in reading whit ch341a programmer

Hi flashrom developers, first af all thankyou for your awesome work.
I recently migrated from linux mint 13 (ubuntu 12.04 based) to Linux Mint lmde (Debian stretch based) and i'm aving some problems in using flashrom with a ch341a based programmer. 
When trying to read an spi flash i got this error :

cb_in: error: LIBUSB_TRANSFER_TIMED_OUT

cb_in: error: LIBUSB_TRANSFER_TIMED_OUT

cb_in: error: LIBUSB_TRANSFER_TIMED_OUT
ch341a_spi_spi_send_command: Failed to read 4100 bytes
Read operation failed!
FAILED.

Sometimes, but very rarely, i can achieve a complete read.

Everything work fine if i reboot in the old OS, so, i think, it's not an hardware problem.

Have you got any advice for me? Or is there any way i can help you to figure out the trouble? 
Thankyou in advance.

[Mike Banon]

Perhaps you have a problem with your libusb library. Please try to
upgrade or reinstall it and maybe this problem will go away.

On Thu, Aug 8, 2019 at 10:20 AM Marino.Gregorio--- via flashrom
 wrote:
> Hi flashrom developers, first af all thankyou for your awesome work.
> I recently migrated from linux mint 13 (ubuntu 12.04 based) to Linux Mint lmde (Debian stretch based) and i'm aving some problems in using flashrom with a ch341a based programmer.
> When trying to read an spi flash i got this error :
>
> cb_in: error: LIBUSB_TRANSFER_TIMED_OUT
>
> cb_in: error: LIBUSB_TRANSFER_TIMED_OUT
>
> cb_in: error: LIBUSB_TRANSFER_TIMED_OUT
> ch341a_spi_spi_send_command: Failed to read 4100 bytes
> Read operation failed!
> FAILED.
>
> Sometimes, but very rarely, i can achieve a complete read.
>
> Everything work fine if i reboot in the old OS, so, i think, it's not an hardware problem.
>
> Have you got any advice for me? Or is there any way i can help you to figure out the trouble?
> Thankyou in advance.
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