Bug 1370

Summary:	PulseView Crash at loading, when MCP2221 is connected
Product:	PulseView	Reporter:	Christos <ploufus>
Component:	Other	Assignee:	Nobody <nobody>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	uwe
Priority:	Normal
Version:	0.4.1
Target Milestone:	---
Hardware:	x86
OS:	Windows

Description Christos 2019-03-23 11:55:30 CET

running in Windwos 7 64 bit 

When PulseView start's AND a MCP2221 usb>serial converted is connected,
PulseView crashes during loading fx2lafw at 3% loading

tried both 32bit version of pulseview and 64bit, stable 0.4.1 and latest build (today)

when another usb converted is connected (ch340/FTDI) it does NOT crash

if i start pulseview with pulseview -D, option it does NOT crash at loading
however if i "select device" and choose anything from the list it does crash.

i tried changing driver with zadig to CDC, but crashes again

MCP2221 VID=04D8 PID=00DD

Comment 1 Uwe Hermann 2019-06-30 14:42:04 CEST

Thanks for the bug report!

I've been able to reproduce this with an MCP2221 device I bought. After some digging, it turns out this is caused by various scpi-serial drivers, e.g. gwinstek-gds-800 and others, more specifically by libserialport's sp_list_ports().

Turns out the non-obvious root cause for this is a crash caused by the issue mentioned in bug #1031, which is now fixed.

New nightly Windows installers are now available and should no longer lead to crashes with MCP2221 and potentially other devices.

*** This bug has been marked as a duplicate of bug 1031 ***