Arch Linux User Repository

When does the 'postinst' script get called?

@OpusOne Sorry, not sure what to tell you. I just did a clean Arch install, installed Picoscope7 with Pamac/pamac-aur and it just worked... Maybe just try to manually chmod +x /opt/picoscope/lib/PicoScope.GTK ?

No error that I noticed. I am on Arch directly. I don't think that makes a difference, but I use aurutils to install/update AUR packages.

I'm looking at the /opt/picoscope/scripts/picoscope7_postinst script to try and figure out this permission issue.

@OpusOne Not sure what's with the permissions, I don't explicitly touch them. The postinst script from the deb package should take care of setting PicoScope.GTK as executable on line 29. For me the installed binary correctly ends up as

-rwxr-xr-x 1 root root 179203399 Apr 18 14:31 /opt/picoscope/lib/PicoScope.GTK

and I can run it directly like this. Not sure why you don't get x permissions. What OS are you running, so I can try to reproduce the issue? Did you get any error during installation regarding the postinst step?

Thanks for your updates. Unfortunately, in my case, the picoscope executable still exits early with a 126 error code.

Trying to debug this, the 'picoscope' executable actually links to /opt/picoscope/bin/picoscope, which is a bash script, which uses the notify-send tool and then runs the following command:

//opt/picoscope/lib/PicoScope.GTK $@ 2>&1 >/dev/null 2>&1 >/dev/null $@ 2>&1 >/dev/null 2>&1 >/dev/null

the redirections explain why I get no message at all when running it from the command line.

So, next I tried running /opt/picoscope/lib/PicoScope.GTK directly. But it can't be run: the permissions set for this file are:

-rw-r--r-- 1 root root

And error 126 from bash seems also to indicate a permission error, it just didn't click until I looked further as I didn't know that 'picoscope' was a bash script.

What's up with these permissions in /opt/picoscope/lib ?

Hey all, thanks for raising the issues. Picotech finally brought the stable in line with the Early Access, and I could remove the troublesome gtk-sharp dependency and apply the same library install fixes as on the Early Access. A quick test with my 3203D on Manjaro looks good. Let me know if anything is still broken.

same here, I see the below excerpt from generator error report...

<event time="17/04/25 07:52:28.093" category="ApplicationInfo" level="Info">Application 'PicoScope 7 T&M' (version 7.1.50.5594 X64) starting.</event> <event time="17/04/25 07:52:28.111" category="ID" level="Info">1B8DE91210AEB3DAA057C8B9F476AA89</event> <event time="17/04/25 07:52:28.112" category="Environment" level="Info">Failed to detect access rights</event> <event time="17/04/25 07:52:28.116" category="Environment" level="Info">OS Version - Linux Arch Linux</event> <event time="17/04/25 07:52:28.116" category="Environment" level="Info">.net Version - 9.0.4</event> <event time="17/04/25 07:52:28.117" category="ApplicationInfo" level="Info">Settings file version - 11.5.1</event> <event time="17/04/25 07:52:28.117" category="ApplicationInfo" level="Info">Preferences file version - 2.0.0</event> <event time="17/04/25 07:52:28.117" category="ApplicationInfo" level="Info">Probes file version - 1.0.0</event> <event time="17/04/25 07:52:28.117" category="ApplicationInfo" level="Info">Data file binary header version - 1</event> <event time="17/04/25 07:52:28.530" category="Environment" level="Info">Loaded libusb-1.0 ver. 1.0.28.11946</event> <event time="17/04/25 07:52:28.531" category="Environment" level="Info">USB Hotplug available</event> <event time="17/04/25 07:52:28.602" level="Info">Using default culture: English (United States).</event> <event time="17/04/25 07:52:28.934" category="Device" level="Info">Attempting to load psospa</event> <event time="17/04/25 07:52:28.935" level="Info">Checking driver 'psospa' exists in executable path '/opt/picoscope/lib/</event> <event time="17/04/25 07:52:28.936" level="Info">Driver not found 'psospa'</event> <event time="17/04/25 07:52:28.936" category="Device" level="Info">Finished loading psospa</event> <event time="17/04/25 07:52:28.936" level="Error">Driver for model PSOSPA not available, code DllNotFound</event> <event time="17/04/25 07:52:29.732" category="Exception" level="Error">Exception:System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.DllNotFoundException: Unable to load shared library 'picocv' or one of its dependencies. In order to help diagnose loading problems, consider using a tool like strace. If you're using glibc, consider setting the LD_DEBUG environment variable: /opt/picoscope/lib/picocv.so: cannot open shared object file: No such file or directory /opt/picoscope/lib/libpicocv.so: cannot enable executable stack as shared object requires: Invalid argument /opt/picoscope/lib/picocv: cannot open shared object file: No such file or directory /opt/picoscope/lib/libpicocv: cannot open shared object file: No such file or directory

at Pico.Interop.OpenCV.Imports.InspectData(IntPtr dataPtr, Int32 length, Int32& width, Int32& height, Int32& channels) at Pico.Interop.OpenCV.PicoCV.PcvImage.InspectData(Byte[] data, Int32& width, Int32& heigth, Int32& channels) at PICM..(Byte[], Int32&, Int32&, Int32&) at Pico.Interop.Common.Drawing.PicoCVImageFactory.FromResourceId(String id) at Pico.Services.Themes.ThemedIcon1..ctor(String maskResourceId) at Pico.Services.Themes.UpDownIcon1..ctor(String maskResourceId) at PSV.ic..ctor(String a) at PSV.id.CreateThemedIcon(String a) at Pico.Services.Themes.ThemedIconProvider2.GetImage(String maskResourceId, ThemedIconState state, Nullable1 color) at PicoScope.GTK.Controls.Themed.PlusMinusImage.GetImage(String resourceId, ThemedIconState state) at PicoScope.GTK.Controls.Themed.ThemedImageBase.UpdateIcon() at PicoScope.GTK.Controls.Themed.ThemedImageBase.SetSizeRequest(Int32 width, Int32 height) at PicoScope.GTK.Controls.Themed.ThemedImageBase..ctor(Action1 callbackRegistrar, Action1 callbackRemover, String maskResourceId, Boolean isInverted, Int32 width, Int32 height)...

Still no luck with 7.1.50. The app exits immediately, I get this message in the journal, with no further detail that I could find:

app-picotech\x2dpicoscope@aafdfd5be40244f6be93b93aa7b0902a.service: Main process exited, code=exited, status=126/n/a

The crash now seems to occur because the picocv assembly is not found. This is the error I get:

(PicoScope.GTK:41836): Gtk-CRITICAL **: 14:15:55.251: gtk_main_quit: assertion 'main_loops != NULL' failed
[ERROR] FATAL UNHANDLED EXCEPTION: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.DllNotFoundException: picocv assembly:<unknown assembly> type:<unknown type> member:(null)
  at (wrapper managed-to-native) Pico.Interop.OpenCV.Imports.InspectData(intptr,int,int&,int&,int&)
  at Pico.Interop.OpenCV.PicoCV.PcvImage.InspectData (System.Byte[] data, System.Int32& width, System.Int32& heigth, System.Int32& channels) [0x00014] in <ef5590eb7b8fc57912aa45e68dc07163>:0
  at Pico.Interop.Common.Drawing.PicoCVImageFactory.FromResourceId (System.String id) [0x0003d] in <1e742560f91a5a6ac7dd462358ae3f6c>:0
  at Pico.Services.Themes.ThemedIcon`1[TImage]..ctor (System.String maskResourceId) [0x0004b] in <31116f9be9169880b5629966a99e4925>:0
  at Pico.Services.Themes.UpDownIcon`1[TImage]..ctor (System.String maskResourceId) [0x00000] in <31116f9be9169880b5629966a99e4925>:0
  at PSV.hx..ctor (System.String a) [0x00000] in <9f7e35a9e29a33ee18c58ffc9bfba9ae>:0
...

Right now picoscope 7 crash even with gtk-sharp-3 2.99.3-5