"Packet Bytes" pane not showing ASCII bytes

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Why am I not seeing the ASCII decode as shown on this help page:

https://documentation.help/Wireshark-...

I've right clicked and have "Show text based on packet ... as ASCII." Only one or a few of the ASCII bytes are decode. If I right click, select "Copy Bytes as Hex + ASCII Dump" and then paste into an editor, the decode is there.

(I'd paste a screen show but as a new user do not have enough points or something).

Mike

[email protected]

asked 2020-11-04 13:17:41 +0000

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Which OS are you running on?

Please copy the contents of Wireshark -> Help -> About Wireshark and paste them into a comment here.

grahamb (2020-11-04 14:10:26 +0000) edit

Windows 10.

Version 3.4.0 (v3.4.0-0-g9733f173ea5e)

Copyright 1998-2020 Gerald Combs <[email protected]> and contributors. License GPLv2+: GNU GPL version 2 or later <https://www.gnu.org/licenses/gpl-2.0.html> This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Compiled (64-bit) with Qt 5.15.1, with libpcap, with GLib 2.52.3, with zlib 1.2.11, with SMI 0.4.8, with c-ares 1.15.0, with Lua 5.2.4, with GnuTLS 3.6.3 and PKCS #11 support, with Gcrypt 1.8.3, with MIT Kerberos, with MaxMind DB resolver, with nghttp2 1.39.2, with brotli, with LZ4, with Zstandard, with Snappy, with libxml2 2.9.9, with QtMultimedia, with automatic updates using WinSparkle 0.5.7, with AirPcap, with SpeexDSP (using bundled resampler).

Running on ...

(more)

[email protected] (2020-11-04 14:13:26 +0000) edit

This works for me, I think we need a screenshot. Post it on a public share, e.g. Google Drive, DropBox etc. and post a link to it back here.

grahamb (2020-11-04 14:32:56 +0000) edit

I have the same behavior when I locate the Wireshark window on a secondary monitor with windows' scaling enabled. Try to move the window to the primary monitor, this fixed it for me.

Alex L. (2020-11-04 14:58:50 +0000) edit

Chuckc (2020-11-04 14:59:30 +0000) edit

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(Not an answer but rather than burying in comments)
To recreate (or a close facsimile thereof) on Win10:

Change "Scale and layout" to 125%
Open Wireshark
Change "Scale and layout" back to 100%
Select a packet to force redraw of packet bytes

Chuckc

answered 2020-11-04 19:28:56 +0000

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There's a GitLab issue on this, right?

Guy Harris (2020-11-04 21:38:51 +0000) edit

Yes. 3 or 4 with similar symptoms.

Chuckc (2020-11-04 23:09:42 +0000) edit

Could you add links to those issues here?

Guy Harris (2020-11-05 00:50:22 +0000) edit

15819: Wireshark ascii display: per-monitor DPI aware problem?

16621: Error display on external monitor

16774: Packet Bytes window is not showing hex and bytes correctly (because the UI misinterprets the screen scale level information provided by the OS)

16774 has similar steps to recreate. Easier to recreate with two monitors but can be done with a single display on Win10 VM.

Chuckc (2020-11-05 01:45:15 +0000) edit

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"Packet Bytes" pane not showing ASCII bytes

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"Packet Bytes" pane not showing ASCII bytes