action #124652
Updated by okurz over 1 year ago
## Motivation
During our graphical YaST tests we (the qe-yam team) encounter a type of graphic glitch where the screen is not properly refreshed.
Examples can be seen [here](https://openqa.suse.de/tests/10436703#step/iscsi_client/57) and [here](https://openqa.suse.de/tests/9680782#step/yast2_control_center/96)
This behavior is sporadic but widespread enough that it has forced qe-yam to apply [workarounds](https://github.com/os-autoinst/os-autoinst-distri-opensuse/pull/15889) to a number of our tests.
Because the conditions allowing the workarounds are not always consistent, we have interest in the root of the issue getting resolved.
Our [latest bug entry](https://bugzilla.suse.com/show_bug.cgi?id=1204176) on the matter has been tagged as WONTFIX because we (qe-yam and the YaST developers) have not found a way to reproduce this glitch outside of the openQA environment.
latest: https://openqa.suse.de/tests/10499467#step/yast2_lan_restart_vlan/19 (glitch does not happen on yast2_control_center on last build but can be seen elsewhere)
last good: https://openqa.suse.de/tests/5900202#step/yast2_control_center/94
### Scope
aarch64, s390x, x86_64 on SLE 15-SP4 and SLE 15-SP5 (issue is not exclusive on qemu)
## Acceptance criteria
* **AC1:** The graphic glitch does not appear anymore in tests
## Problem
* **H1** could be the qemu video adapter
* **H1.1** **REJECTED** could be the specific choice of qemu video adapter
* *E1.1-1* *DONE* Try out the reproducing openQA test with different qemu video adapters -> *O1.1-1-1* #124652#note-16 different video
adapters reproduced the same issue
* **H1.2** maybe can not be reproduced with using special qemu video adapter settings
* **H2** **REJECTED** only happens in older SLE versions => Current SLE15SP5 affected the same
* *E2-1* *DONE* Run the equivalent openQA test on SLE <15-SP5 ->
* *O2-1-1* issue observed on SLE15SP4-build31.2+ #124652#note-3
* *O2-1-2* 0/100 failures on SLE15SP3+maintenance updates #124652#note-25
* *E2-2* *DONE* Run the equivalent openQA test on current Tumbleweed -> *O2-2-1* Tumbleweed does not reproduce the problem, see #124652#note-26
* *E2-3* *DONE* Run the equivalent openQA test on current SLE15SP5 -> *O2-3-1* #124652#note-32 5/101 (yast2_security) fails [SLE15SP5@OSD](https://openqa.suse.de/tests/overview?distri=sle&build=glitch_investigation_SP5&version=15-SP5)
* **H2.1** **ACCEPTED** only happens in older SLE versions with newer maintenance updates
* *E2.1-1* *DONE* Run openQA test on SLE15-SP4 -> #124652#note-23 97% fail rate iscsi_server on SLE15-SP4
* *E2.1-2* *DONE* From #124652#note-24 Run openQA test on SLE15-SP3 with state of maintenance update from 2 years ago ("last good" https://openqa.suse.de/tests/5900202#step/yast2_control_center/94 from #Motivation) -> #124652-36 0/100 failures on SLE15SP3GM; 0/100 failures on SLE15SP2+updates -> accept *H2.1*
* **H3** **ACCEPTED** can only be reproduced in openQA
* *E3-1* *DONE* try to reproduce manually -> no one could reproduce manually
* **H3.1** **REJECTED** can be reproduced on openqa.suse.de regardless of OS version or variant
* *E3.1-1* *DONE* Run openSUSE openQA test on openqa.suse.de -> *O3.1-1-1* #124652#note-32 0/101 fails [Tumbleweed@OSD](https://openqa.suse.de/tests/overview?distri=opensuse&build=glitch_investigation_tw&version=Tumbleweed) + 0/101 [Leap15.4@OSD](https://openqa.suse.de/tests/overview?distri=opensuse&build=glitch_investigation_leap_sp4&version=15.4) + 0/100 [Leap15.5@OSD](https://openqa.suse.de/tests/overview?distri=opensuse&version=Leap15.5&build=glitch_investigation_leap_sp5) vs. 5/101 fails [SLE15SP5@OSD](https://openqa.suse.de/tests/overview?distri=sle&build=glitch_investigation_SP5&version=15-SP5)
* **H4** **ACCEPTED** The test module(s) "iscsi_server/client" are most prone to fail, also shows in other yast modules
* *E4-1* *DONE* Gather statistics for different yast modules ->
* *O4-1-1* #124652#note-11 the problem was referenced for different modules, e.g. iscsi_server and yast2_security but no clear statistics
* *O4-1-2* #124652#note-23 97-99% fail rate iscsi_server on SLE15-SP4/5 vs. #124652#note-32 5% yast2_security on SLE15-SP5
## Suggestions
* It looks like window decorations are missing from the dialog
* The emulated graphics adapter might be causing problems with the window manager
* Research what options could be used with the graphics emulation in qemu
* Identify the underlying parameter(s) in the openQA environment that can cause this graphical glitch.
* Find a last good? We couldn't find one easily?
* could be a VNC-related issue? Missing borders may occur there
## Further details
[Link to latest](https://openqa.suse.de/tests/latest?arch=x86_64&distri=sle&flavor=Online&machine=64bit&test=yast2_gui&version=15-SP5)