dx-packages team mailing list archive

["Stephen M. Webb" <stephen.webb@xxxxxxxxxxxxx>]

https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1354498

** Description changed:

- I have a macbook pro with retina display. In Ubuntu 14.04 64bit, every
- couple of reboots, the 'large text' option in Universal Access gets
- switched on upon login. It happens in roughly 1 out of 5 reboots for 1
- or more users on the computer.
+ [ Impact ]
  
- It appears to happen to people with small HighDPI screens. In my case, it's 13 inch at 2560x1600.
- Another example is 13 inch at 1080p -  http://askubuntu.com/questions/453785/large-text-button-in-universal-access-turns-itself-on-after-reboot-ubuntu-14-0
+ Using a display scaling factor of > 1.0 the 'large text' setting is
+ sometimes enabled automatically on session start, doubling the scaling
+ factor.
  
- unity:
-   Installed: 7.2.1+14.04.20140513-0ubuntu2
-   Candidate: 7.2.1+14.04.20140513-0ubuntu2
-   Version table:
-  *** 7.2.1+14.04.20140513-0ubuntu2 0
-         500 http://sk.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
-         100 /var/lib/dpkg/status
-      7.2.0+14.04.20140423-0ubuntu1.2 0
-         500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
-      7.2.0+14.04.20140416-0ubuntu1 0
-         500 http://sk.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
+ [ Test Case ]
  
- unity-control-center:
-   Installed: 14.04.3+14.04.20140410-0ubuntu1
-   Candidate: 14.04.3+14.04.20140410-0ubuntu1
-   Version table:
-  *** 14.04.3+14.04.20140410-0ubuntu1 0
-         500 http://sk.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
-         100 /var/lib/dpkg/status
+ (1) Using the System Settings > Displays > Scale for menu and title bars slider, set the scaling to a value > 1 (for example, 1.88).
+ (2) Log out and in several times.
  
+ Since this problem occurs as a result of a race condition somewhere, it
+ is not reliably reproducable.
  
- intel iris pro graphics (lspci -vvv):
+ [ Regression Potential ]
  
- 00:02.0 VGA compatible controller: Intel Corporation Device 0a2e (rev 09) (prog-if 00 [VGA controller])
- 	Subsystem: Apple Inc. Device 011a
- 	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
- 	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
- 	Latency: 0
- 	Interrupt: pin A routed to IRQ 66
- 	Region 0: Memory at b0000000 (64-bit, non-prefetchable) [size=4M]
- 	Region 2: Memory at a0000000 (64-bit, prefetchable) [size=256M]
- 	Region 4: I/O ports at 1000 [size=64]
- 	Expansion ROM at <unassigned> [disabled]
- 	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
- 		Address: fee00018  Data: 0000
- 	Capabilities: [d0] Power Management version 2
- 		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
- 		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
- 	Capabilities: [a4] PCI Advanced Features
- 		AFCap: TP+ FLR+
- 		AFCtrl: FLR-
- 		AFStatus: TP-
- 	Kernel driver in use: i915
+ Any code change to the Unity desktop shell could introduce a new crash
+ or lockup.
+ 
+ [ Other Info ]
+ 
+ The Unity SRU fix for Ubuntu 14.04 LTS was cherry-picked from Ubuntu
+ 14.10 where it has been in production use for some time without
+ demonstrating regression.

** Patch added: "debdiff between unity_7.2.3+14.04.20140826-0ubuntu1 and unity_7.2.4+14.04.20141217-0ubuntu1"
   https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1332947/+attachment/4293179/+files/unity_7.2.4%2B14.04.20141217-0ubuntu1.debdiff

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https://bugs.launchpad.net/bugs/1332947

Title:
  HDPI: unity randomly turns on large text in universal access

Status in OEM Priority Project:
  In Progress
Status in OEM Priority Project trusty series:
  New
Status in Unity:
  Fix Committed
Status in Unity 7.2 series:
  In Progress
Status in unity package in Ubuntu:
  Fix Released
Status in unity source package in Trusty:
  In Progress

Bug description:
  [ Impact ]

  Using a display scaling factor of > 1.0 the 'large text' setting is
  sometimes enabled automatically on session start, doubling the scaling
  factor.

  [ Test Case ]

  (1) Using the System Settings > Displays > Scale for menu and title bars slider, set the scaling to a value > 1 (for example, 1.88).
  (2) Log out and in several times.

  Since this problem occurs as a result of a race condition somewhere,
  it is not reliably reproducable.

  [ Regression Potential ]

  Any code change to the Unity desktop shell could introduce a new crash
  or lockup.

  [ Other Info ]

  The Unity SRU fix for Ubuntu 14.04 LTS was cherry-picked from Ubuntu
  14.10 where it has been in production use for some time without
  demonstrating regression.

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