[Libreoffice-bugs] [Bug 106037] Libreoffice crash when LAN connected. Simple single PC installation, without Samba, without network drives.

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=106037

matthewnote at yahoo.co.uk changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|WORKSFORME                  |---

--- Comment #7 from matthewnote at yahoo.co.uk ---
Hello, something new learnt

Starting new cancer research analyses, the problem returns, the same as before,
freezing LO Calc and Linux -reboot required.  The recovery process works very
well (needed about five to ten times per day whether the document is 1.7 or up
to 8.3 Mbytes). Light Ubuntu offers version 5.3.3.2 build
1:5.3.3~rc2-0ubuntu0.16.04.1~lo0.  Upgrade done, same effects.  This machine is
Linux only.  All other software (navigators, pdf viewers etc) stay stable.

The problem seemed to be induced by data entry with much scrolling.  The Calc
sheets are on an UHD 4k monitor with much copy from .csv, then paste then
sorting.  The lockup freeze doesn't always occur during the wheel mouse scroll,
nor specifically when using scrollbar.  It can happen when entering data too. 
However it seems to be always after intense mouse wheel movement during the
previous ten minutes, as if a corruption has occurred that will, sooner or
later, manifest in a different way (cumulative).  

The mouse is an apparently ordinary, most simple Microsoft Wheel mouse Optical
USB.  Linux is with parameters for pointer speed, yet not for scroll wheel.
Forums mention problems in the past for dual-boot systems and
unplugging-plugging such pointers to escape mouse freezing (rather than
software crashes).

The test here is to get on with the research using a Lenovo optical wheel USB
mouse with a cranky heavy wheel ratchet.  Immediate relief, zero crashes, day
after day since one week.  Computer left running all hours to see if something
accumulates.  No problem.

LibreOffice calc seems to be uniquely vulnerable to parsing (some) wheel mouse
accelerations or how Linux handles it includes passing on errors or a working
area buffer overflows.  It were preferable to use a Linux "certified" mouse,
yet as far as I know only Roccat products have received attention with drivers
written by a volunteer.

It may, only may be a Microsoft interpretation in the mouse itself, yet I doubt
it.  It seems to be possibly more authentic about the user command in click
rate terms, LO Calc unable to realise it on screen.   The files are typically
300 rows, 100 columns per sheet. The Lenovo product makes a helluvah noise but
works perfectly.  

I reopen the bug because anyone with any new product (UHD screen or not) may
fall into the pit.  I feel it's up to software to buffer and self-protect
rather than ban certain hardware.  Everything's well here, yet dual-boot users
may not agree.

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