Thanks a lot. You are absolutely right.
After removing the old stuff from /usr/local/lib und rebuilding
ld.so.cache there is no problem any longer. Xserver runs fine with
version: 2.34.2-0ubuntu2~20.04.1 now.
Sorry for your inconvenience and again, many thanks.
Klaus
p.s. will close this bug
** Changed in: at-spi2-atk (Ubuntu)
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/1905560
Title:
XServer Crashes with atk_component_scroll_to_point if NVIDIA Driver
340 is Used
Status in at-spi2-atk package in Ubuntu:
Invalid
Bug description:
System:
- Lenovo ThinkPad T61 with
- Intel Core 2 Duo T7500 @ 2,2 GHz
- NVIDIA G86M (Quadro NVS 140M) graphics chipset.
- Samsung SSD 750, 250GByte
- 4Gbyte Hauptspeicher
OS: Ubuntu from 14.4 LTS, continuously upgraded to 18.04 LTS.
NVIDIA third-party free driver installed via ubuntu-drivers.
Notebook runs fine with 18.04. After upgrade to 20.04 LTS there is no GUI any
longer.
startx called from command-line reveals a crash of xserver due to an
undefined symbol (atk_component_scroll_to_point) in libatk-bridge2.0-0.
In the course of upgrading to 20.04 LTS, this lib has been updated
from 2.26.2-1 to 2.34.2.
I found this workaround: uninstall libatk-bridge2.0-0 (Purge). It has
only 5 dependencies (some Python and Gnome-Orca) which are of no use
to me. Downloaded 2.26.2-1 out of 18.04-repo and installed it via
dpkg. Install runs smooth without any error message. After restart,
GUI is back again.
There is no doubt, the problem is caused by libatk-bridge2.0-0 >
2.26.2 due to the missing export of atk_component_scroll_to_point.
Please restore this (and possibly other) exports, that have been
dropped between 2.26.2 and 2.34.2, even if the corresponding functions
are left empty. One must not drop any function from ABI without
increasing library version. You can never tell, what relies on the
existence of these functions.
Regards, Klaus
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