Call for testing: ubuntu-frame, mir-test-tools (Mir 2.18.0 update)

alan_g · September 18, 2024, 10:27am

Following the latest Mir release (2.18.0) these snaps been updated.

There is also new Ubuntu Frame feature, a “launcher” (described below).

snap	version
mir-test-tools	2.18.0-snap171
ubuntu-frame	197-mir2.18.0

To test, just switch to the candidate channel. For example:

snap refresh --channel 24/candidate ubuntu-frame

And use as normal. Please let us know any results here.

If no problems are identified we aim to promote to 24/stable in a week.

Following this update, we will be switching the default track to 24.

New Ubuntu Frame Launcher

Frame can now optionally support the launcher, which is a minimal dock allowing the user to switch between fullscreen application.

Documentation

Ubuntu Frame’s launcher daemon provides users with a way to navigate between multiple applications running on a single frame instance.

To enable the launcher, run:

snap set ubuntu-frame launcher=true

Behavior

The following specifies the behavior that you can of the launcher
daemon:

When frame starts, the launcher will appear in the left-hand side of the screen with a black background
As window are opened, the launcher will display an icon that corresponds with the application for that window
Icons will ONLY be displayed for applications that are packaged as snaps. The desktop files for these applications are found in the /var/lib/snapd/desktop directory.
When an icon is clicked, the corresponding window will be brought into focus
If a window is closed, then the icon will be removed from the launcher
If we cannot resolve an icon for a window, then the launcher will attempt to use the application-x-executable icon. If that fails, then the icon will be missing entirely.

alan_g · September 18, 2024, 2:32pm

We’ve seen one problem when using wpe-webkit-mir-kiosk (not found other affected snaps, yet):

github.com/canonical/mir

Since 2.18.0 Frame fails to enforce fullscreen

opened 01:37PM - 18 Sep 24 UTC

AlanGriffiths

bug

# 24/candidate: 197-mir2.18.0 ``` $ WAYLAND_DISPLAY=wayland-99 WAYLAND_D…EBUG=client wpe-webkit-mir-kiosk.cog 2>&1 | grep -e xdg_toplevel.*configure -e xdg_toplevel.*size -e create_buffer [3455836.499] xdg_toplevel@17.configure(0, 0, array[0]) [3455836.537] xdg_toplevel@17.configure(0, 0, array[0]) [3455836.552] xdg_toplevel@17.configure(1292, 1054, array[4]) [3455953.107] xdg_toplevel@17.configure(0, 0, array[8]) ... ``` # 24/stable: 152-mir2.17.0 ``` $ WAYLAND_DISPLAY=wayland-99 WAYLAND_DEBUG=client wpe-webkit-mir-kiosk.cog 2>&1 | grep -e xdg_toplevel.*configure -e xdg_toplevel.*size -e create_buffer [3582358.284] xdg_toplevel@17.configure(0, 0, array[0]) [3582358.310] xdg_toplevel@17.configure(0, 0, array[0]) [3582358.316] xdg_toplevel@17.configure(1280, 1024, array[4]) [3582477.192] xdg_toplevel@17.configure(1280, 1024, array[8]) ... ```

This is being fixed in Mir, so will need a Mir release before re-rolling.

Meanwhile, please let us know if you encounter any additional issues

saviq · September 19, 2024, 6:44am

Another issue we’ve identified is a segmentation fault upon input device disconnection:

github.com/canonical/mir

SIGSEGV in `mir::frontend::WlSeat::ConfigObserver::device_changed` on input device disconnection

opened 05:41PM - 18 Sep 24 UTC

Saviq

bug triaged

```gdb #0 0x000075eb2898768c in mir::frontend::WlSeat::ConfigObserver::device_…changed (this=0x5c6fbdb4c9a0, device=...) at /root/parts/mir/src/src/server/frontend_wayland/wl_seat.cpp:120 keyboard_config = {value_ = {impl = {_M_t = {<std::__uniq_ptr_impl<MirKeyboardConfig::Implementation, std::default_delete<MirKeyboardConfig::Implementation> >> = {_M_t = {<std::_Tuple_impl<0, MirKeyboardConfig::Implementation*, std::default_delete<MirKeyboardConfig::Implementation> >> = {<std::_Tuple_impl<1, std::default_delete<MirKeyboardConfig::Implementation> >> = {<std::_Head_base<1, std::default_delete<MirKeyboardConfig::Implementation>, true>> = {_M_head_impl = {<No data fields>}}, <No data fields>}, <std::_Head_base<0, MirKeyboardConfig::Implementation*, false>> = {_M_head_impl = 0x7ffe491d74d0}, <No data fields>}, <No data fields>}}, <No data fields>}}}, is_set_ = 48} #1 0x000075eb2875a770 in operator() (__closure=0x75ea9c0dd8e0, observer=...) at /root/parts/mir/src/src/server/input/default_input_device_hub.cpp:179 dev = @0x5c6fbdb9d3a0: {<std::__shared_ptr<mir::input::Device, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<mir::input::Device, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x0, _M_refcount = {_M_pi = 0x0}}, <No data fields>} __for_range = @0x5c6fbdba3e60: {<std::_Vector_base<std::shared_ptr<mir::input::Device>, std::allocator<std::shared_ptr<mir::input::Device> > >> = {_M_impl = {<std::allocator<std::shared_ptr<mir::input::Device> >> = {<std::__new_allocator<std::shared_ptr<mir::input::Device> >> = {<No data fields>}, <No data fields>}, <std::_Vector_base<std::shared_ptr<mir::input::Device>, std::allocator<std::shared_ptr<mir::input::Device> > >::_Vector_impl_data> = {_M_start = 0x5c6fbdb9d3a0, _M_finish = 0x5c6fbdb9d3b0, _M_end_of_storage = 0x5c6fbdb9d3b0}, <No data fields>}}, <No data fields>} __for_begin = {_M_current = 0x5c6fbdb9d3a0} __for_end = {_M_current = 0x5c6fbdb9d3b0} added = @0x5c6fbdba3e48: {<std::_Vector_base<std::shared_ptr<mir::input::Device>, std::allocator<std::shared_ptr<mir::input::Device> > >> = {_M_impl = {<std::allocator<std::shared_ptr<mir::input::Device> >> = {<std::__new_allocator<std::shared_ptr<mir::input::Device> >> = {<No data fields>}, <No data fields>}, <std::_Vector_base<std::shared_ptr<mir::input::Device>, std::allocator<std::shared_ptr<mir::input::Device> > >::_Vector_impl_data> = {_M_start = 0x0, _M_finish = 0x0, _M_end_of_storage = 0x0}, <No data fields>}}, <No data fields>} changed = @0x5c6fbdba3e60: {<std::_Vector_base<std::shared_ptr<mir::input::Device>, std::allocator<std::shared_ptr<mir::input::Device> > >> = {_M_impl = {<std::allocator<std::shared_ptr<mir::input::Device> >> = {<std::__new_allocator<std::shared_ptr<mir::input::Device> >> = {<No data fields>}, <No data fields>}, <std::_Vector_base<std::shared_ptr<mir::input::Device>, std::allocator<std::shared_ptr<mir::input::Device> > >::_Vector_impl_data> = {_M_start = 0x5c6fbdb9d3a0, _M_finish = 0x5c6fbdb9d3b0, _M_end_of_storage = 0x5c6fbdb9d3b0}, <No data fields>}}, <No data fields>} removed = @0x5c6fbdba3e78: {<std::_Vector_base<std::shared_ptr<mir::input::Device>, std::allocator<std::shared_ptr<mir::input::Device> > >> = {_M_impl = {<std::allocator<std::shared_ptr<mir::input::Device> >> = {<std::__new_allocator<std::shared_ptr<mir::input::Device> >> = {<No data fields>}, <No data fields>}, <std::_Vector_base<std::shared_ptr<mir::input::Device>, std::allocator<std::shared_ptr<mir::input::Device> > >::_Vector_impl_data> = {_M_start = 0x0, _M_finish = 0x0, _M_end_of_storage = 0x0}, <No data fields>}}, <No data fields>} #2 0x000075eb28761439 in std::__invoke_impl<void, mir::input::ExternalInputDeviceHub::Internal::changes_complete()::<lambda()>::<lambda(const std::shared_ptr<mir::input::InputDeviceObserver>&)>&, const std::shared_ptr<mir::input::InputDeviceObserver>&>(std::__invoke_other, struct {...} &) (__f=...) at /usr/include/c++/13/bits/invoke.h:61 No locals. #3 0x000075eb2875fd97 in std::__invoke_r<void, mir::input::ExternalInputDeviceHub::Internal::changes_complete()::<lambda()>::<lambda(const std::shared_ptr<mir::input::InputDeviceObserver>&)>&, const std::shared_ptr<mir::input::InputDeviceObserver>&>(struct {...} &) (__fn=...) at /usr/include/c++/13/bits/invoke.h:111 No locals. #4 0x000075eb2875eb7e in std::_Function_handler<void(const std::shared_ptr<mir::input::InputDeviceObserver>&), mir::input::ExternalInputDeviceHub::Internal::changes_complete()::<lambda()>::<lambda(const std::shared_ptr<mir::input::InputDeviceObserver>&)> >::_M_invoke(const std::_Any_data &, const std::shared_ptr<mir::input::InputDeviceObserver> &) (__functor=..., __args#0=...) at /usr/include/c++/13/bits/std_function.h:290 No locals. #5 0x000075eb2876c055 in std::function<void(std::shared_ptr<mir::input::InputDeviceObserver> const&)>::operator() (this=0x7ffe491d76f0, __args#0=...) at /usr/include/c++/13/bits/std_function.h:591 No locals. #6 0x000075eb287689ea in mir::ThreadSafeList<std::shared_ptr<mir::input::InputDeviceObserver> >::for_each (this=0x5c6fbd8cf8a8, f=...) at /root/parts/mir/src/src/include/common/mir/thread_safe_list.h:78 copy_of_element = {<std::__shared_ptr<mir::input::InputDeviceObserver, (__gnu_cxx::_Lock_policy)2>> = {<std::__shared_ptr_access<mir::input::InputDeviceObserver, (__gnu_cxx::_Lock_policy)2, false, false>> = {<No data fields>}, _M_ptr = 0x5c6fbdb4c9a0, _M_refcount = {_M_pi = 0x5c6fbdb4c990}}, <No data fields>} lock = {mutex = @0x5c6fbd8cf8a8} current_item = 0x5c6fbd8cf8a8 ``` [gdb.txt](https://github.com/user-attachments/files/17048158/gdb.txt)

saviq · September 20, 2024, 2:14pm

Let me just add that icons on the launcher on Ubuntu Core will only currently be visible using SnapD from the edge/ubuntu-core-desktop channel and manually connecting the desktop-launch interface:

sudo snap refresh snapd --channel edge/ubuntu-core-desktop
sudo snap connect ubuntu-frame:desktop-launch

This will be resolved once SnapD adds a new desktop-files interface: