Monday 29th October 2018

willcooke · October 24, 2018, 1:41pm

Hi everyone, below you will find the updates from the Desktop team from the last week.

If you’re interested in discussing a topic please start a thread in the Desktop area of the Community Hub (this site).
We also have our weekly meeting on IRC. We meet on Tuesday at 13:30 UTC in #ubuntu-desktop on Freenode. There will be an “Any Other Business” section at the end where you are welcome to raise topics. These topics might be discussed during the meeting, or afterwards depending on the time, depth of conversation, topic and so on.

Last week’s notes are here: Monday 22nd October 2018
Next week’s notes are here: Monday 5th November 2018 🎇

robert.ancell · October 24, 2018, 7:48pm

Migrating gnome-software to new snapd media API.
Update gnome-control-center MRs based on reviews / other changes landing.
Completed g-c-c region panel redesign.
Make snap sections browsable in snap store.
Wrote some reviews for snaps.
Fixed first review not showing in gnome-software categories.
Tested confined simple-scan snap in edge channel.
Switch simple-scan to using GtkFileChooserNative so it works better in the snap sandbox.
Released gnome-software 18.04 SRU.
Implement featured snap categories in Snap Store.
Continued work on Sound Panel design implementation.

3v1n0 · October 24, 2018, 10:41pm

GDM / Systemd
- Continued discussion for infamous gdm issue on CanGraphical
Nautilus: some more updates to this merge proposal
GLib: better support for g_auto(s)list to declared types (PR)
Gnome shell
- Fixing crash 1796606 (actually gjs side too)
- Setup my 2nd laptop with touch display to debug bug #1745888, and fixed it [MP]
- Dash-to-dock:
  - Ported to new code after the removal of the Shell.GenericContainer
  - Workarounds for #1725384 and #1745888 (see comment)
- Prepared SRU for mutter and gnome-shell with few cherry picks and oem priority bugs
Xorg:
- Fixed a crash for XInput2 touch events during grabs [MP]
Lots of debugging for various crashes from e.u.c
Need reviews:

jibel · October 25, 2018, 7:45am

Post Cosmic release installation and upgrade bugs triaging.
Built Win 10 disk image for testing Ubuntu alongside Windows installations with UEFI firmware.
Reviewed Automated desktop snap testing tool
Updating the Desktop installer test plan with UEFI, secure boot, Ubuntu alongside Windows 10 and VM tests.
Tested r145 for Firefox snap.

kenvandine · October 25, 2018, 10:45pm

Worked on the 18.10 Hyper-V Desktop image
Reverted gnome-characters snap back to using the application icon rather than the theme icon #1795560
Refreshed gnome-3-28-1804 platform snap, including base = core18
Built gnome-system-monitor against the core18 base and the gnome-3-28-1804 platform snap (just for testing now)
Roadmap sprint in SLC

vanvugt · October 29, 2018, 4:36am

Gnome Shell performance:

Several days deep dive analysing NVIDIA + Xorg issues. Because a lot of users are tied to Nvidia, so it’s also my problem…
- Some systems are latched to 60Hz even in Xorg sessions, which branched from the Wayland framerate fix
- Nvidia threading/CPU regression
- High Xorg CPU in the Nvidia X driver which is blocking the input latency optimization. Now in conversation with Nvidia.
Continued investigation into the output lag of Xorg sessions , and came up with a fix (which I now need to rewrite). That was a pleasant surprise because I was expecting it to be a Xorg limitation and not actually solvable.
Redesigning and rewriting the most recent performance fix for cursor movement in gnome-shell.

Bug management:

Backlogs progress :
- Mostly business as usual but there was a 5% increase in the backlog for gnome-shell this week. Interesting that only half of that uptick (8 or 9 of 17 bugs) was from 18.10, and the other half was 18.04.
Starting to understand PulseAudio’s three most common problems (remaining since Bluetooth skipping was fixed). So for future reference:
- pulseaudio daemon not running and there are no crash reports: Likely it got killed for overusing its rlimit-rttime. This is a questionable feature of PulseAudio where it asks the kernel to kill it if the driver is performing too slow. To avoid the daemon getting killed, just add realtime-scheduling = no to /etc/pulse/daemon.conf.
- PulseAudio lists no devices (other than Dummy) but the kernel/ALSA does. This can happen if a daemon like timidity (or jackd?) opens the device directly, preventing PulseAudio from using it. The surprising part is how many users are installing timidity-daemon.
- PulseAudio lists no devices (other than Dummy) and neither does ALSA → kernel bug (audio hardware not yet supported).

till-kamppeter · October 29, 2018, 2:20pm

Common Print Dialog Backends: Posted requests for inclusion of cpdb-libs, cpdb-backend-cups, cpdb-backend-gcp, cpdb-backend-file packages into Debian.
cpdb-libs: Posted RT request about testing autopkg test script on rugby porter box (arm64). Script works flawlessly there, so autopkg test failure on arm64 seems to be caused by some problem on the build/test servers.
ghostscript: There is an upgrade path bug on transition 16.04 -> 18.04, seems that /usr/share/ghostscript/9.25/iccprofiles/ switched from being a directory to a symlink.
Bugs.

seb128 · October 29, 2018, 4:14pm

sorted out my GNOME gitlab credentials to be able to push again (I was logging with username and not ldap, which doesn’t work to commit)
pushed my totem gallery fixes to master/gnome-3-30
uploaded g-s-d/bionic SRU for a suspend/resume oem validation issue (lp #1797322))
SRUed fix for keyboard backlight controls not working in cosmic
SRUed fix for airplane mode key not working in GNOME (cosmic & bionic, https://launchpad.net/bugs/1740894)
opened MIRs for gupnp and gssdp, part of the rygel/DLNA stack (were in main but need a new review)
SRUed my totem/gallery fix
discussed desktop plans for next cycle
bugs triaging post-cosmic

didrocks · October 29, 2018, 5:05pm

Yaru:
- Fix Yaru-dark partially shipped by error: https://bugs.launchpad.net/ubuntu/+source/yaru-theme/+bug/1799217
- SRU with various Yaru fixes (in unapproved): https://launchpad.net/ubuntu/cosmic/+queue?queue_state=1&queue_text=yaru
Small fix for the Shell regarding volume overdrive OSD: https://code.launchpad.net/~didrocks/ubuntu/+source/gnome-shell/+git/gnome-shell/+merge/357609
MIRS, reviewed the DLNA stack:
- gupnp-dlna: https://bugs.launchpad.net/ubuntu/+source/gupnp-dlna/+bug/1785649
- gupnp: https://bugs.launchpad.net/bugs/1799974
- gssdp: https://bugs.launchpad.net/bugs/1799977
- rygel: https://bugs.launchpad.net/bugs/1786489
- gupnp-av: https://bugs.launchpad.net/bugs/1785629
Misc:
- continue discussing langpack organization and support to understand exactly the need, on https://bugs.launchpad.net/ubuntu/+source/language-selector/+bug/1797860 + IRC
- Read news and main feedback on 18.10

laney · October 29, 2018, 5:35pm

Getting my head back into the systemd --user work:
- Rebasing some of the patches, fixing up and pushing to the merge requests
- Got some feedback, discussed & modified based on that (mainly avoiding using sd_uid_get_display() in favour of calculating the desired session directly).
small Debian upload to merge back our pygobject delta
Helped IS out with cleaning up unneeded cloud instances we were keeping around for autopkgtest
Had to debug a broken juju environment to be able to freeze appstream for cosmic but done now

oSoMoN · October 29, 2018, 6:13pm

firefox

Chris figured out and fixed bug #1798999 (apparmor denials on /dev/shm)
63.0+build2 has been published to all supported series
looked into adding themes-related plugs to the firefox snap, but this doesn’t work because the snap is built against GTK 3.18.9, which is older than what the gtk-common-themes snap supports (≥ 3.20)
re-enabled unity-menubar patch in firefox 64 in beta PPA

chromium

updated stable to 70.0.3538.77
updated dev then beta to 71.0.3578.20 (updated html5test expectations), provided positive feedback on upstream swiftshader patch
updated dev to 72.0.3590.0
built a new stable snap against core18 and successfully tested on bionic, xenial and trusty, waiting on the store team to give their green light before publishing
tested U2F-related bugs with yubikey 4
- bug #1796746 (affecting deb on 18.04): cannot reproduce with latest update on 18.10
- bug #1738164 (snap): confirmed and debugged further, need to work with Jamie to fix it
created wiki page with test plan (long overdue)

libreoffice

prepared and tested 6.0.7 SRU for bionic (bug #1799230), pending the official release announcement

snaps

reviewed and partially tested Kyle’s work on a snapcraft glib extension

other

filed a bug against the ubuntu.com website
SRUed upstream fix for bug #1798053 in gnome-software (back button)
hit all sorts of weird issues at boot when my disk got full, created a trello card to aim at improving the situation

heber013 · October 29, 2018, 7:53pm

My updates:

Submitted desktop snap testing tool
Testing and small fixed for desktop snap testing tool
Analyze openQA and Sikuli integrate any of them to desktop snap testing.

azzar1 · October 30, 2018, 1:00am

Working on gnome-shell --replace crash. Made some progresses but still trying to complete the task.
Proposed a fix for issue “Popup menu opens even if it fails to obtain the grab”
Proposed a fix (rejected but working on a new MP) for issue “Assertion failed in cc_shell_model_set_panel_visibility”

jamesh · October 30, 2018, 8:13am

Yaru for GTK 3.18:

The theme now looks like a decent approximation of the 3.20+ version.
The PR https://github.com/ubuntu/yaru/pull/935, which has a few progress screenshots.
Due to differences in the way GTK 3.18 handles checkbox/radio indicators, I needed to generate image assets rather than reuse the CSS used to draw them. The assets from the GTK 2 theme were a useful starting point.
While there is still room for improvement, the theme is pretty much ready to merge.
It doesn’t contain any of the application specific quirks of the 3.20+ theme, but then this is only intended to make old apps fit in on a new desktop rather than to run Yaru on old desktops.