Installing chromium in a Fedora-24-based DVM Template hijacks unrelated MIME types

[andrewdavidwong]

Qubes OS version (e.g., R3.2):

R3.2

Affected TemplateVMs (e.g., fedora-23, if applicable):

fedora-24-dvm

---

Expected behavior:

Files opened in DispVMs open in appropriate programs.

Actual behavior:

Files opened in DispVMs open in Chromium, even when Chromium cannot read them.

Steps to reproduce the behavior:

1. Use a plain fedora-24-based DVM Template.
2. Open, e.g., an "office" file (e.g., ODS, ODF, DOCX, XLS, etc.) file in a new DispVM. (Note: Trigger the opening from a non-DispVM in a DispVM. Do not qvm-copy the file then manually open it from the DispVM.)
3. The file opens as expected in some appropriate "office suite" program, if installed.

By contrast:

1. Install Chromium in the same DVM Template.
2. Try to open the same file again in a new DispVM (after regenerating the DVM Template).
3. The file opens in Chromium, but since Chromium can't read it, it just triggers a useless and endless "download file" loop.

General notes:

Opening the file from, e.g., Nautilus inside the DispVM works as expected.

---

Somewhat related thread:
https://groups.google.com/d/topic/qubes-users/VcAnMItJkEY/discussion

[ubestemt]

Not sure I can help since I don't use that template myself, but does ~/.local/share/applications/mimeapps.list change? What is the output of xdg-mime query default application/vnd.oasis.opendocument.text and what happens when you run xdg-open filename?

Maybe something in this how-to proves helpful: https://github.com/QubesOS/qubes-doc/pull/379/files?short_path=83ca4e2#diff-83ca4e28de9bcee331783522a52c2bd0

[ubestemt]

Not sure I can help since I don't use that template myself, but does ~/.local/share/applications/mimeapps.list change? What is the output of xdg-mime query default application/vnd.oasis.opendocument.text and what happens when you run xdg-open filename?

Maybe something in this how-to proves helpful: https://github.com/QubesOS/qubes-doc/pull/379/files?short_path=83ca4e2#diff-83ca4e28de9bcee331783522a52c2bd0