touch-packages team mailing list archive

[Timo Jyrinki <timo.jyrinki@xxxxxxxxxxxxx>]

Long discussions about #qt-labs, mostly between tsdgeos and tronical,
about various things. Summarizing:

* <+tronical> tsdgeos: so I think something is wrong with the unit8 binary, my _guess_ is that it isn't built with -fPIC
-> it is built with -fPIC (and -fPIE, also asked about, "ok, that looks good")
* <+tronical> oh wait, there used to be a gcc ARM bug with copy relocations that affected this <+tronical> tsdgeos: could it be that qtbase 5.3 was built with -reduce-relocations and now it isn't anymore?
-> no, both 5.3 and 5.4 built _with_ -reduce-relocations
* binutils has had bugs, Ubuntu has the version with fixes
* -Bsymbolic-functions is system wide default in Ubuntu
-> "well, it explains where that comes from. it doesn't explain why the relocation in unit8 resolved to the wrong address"
* <+tronical> peppe, Mirv, tsdgeos: I realize that this is unrelated to -Bsymbolic-functions because this isn't about functions but a global symbol/variable
* <+tronical> peppe, Mirv, tsdgeos: this particular problem is new and different. QObject::staticMetaObject is a global symbol and here it resolves to two different addresses
* <+tronical> tsdgeos: still there? I have an idea how we may be able to find out where that bad pointer is coming from (it may not necessarily by the unity8 binary)

...to be continued.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to ubuntu-ui-toolkit in
Ubuntu.
https://bugs.launchpad.net/bugs/1403758

Title:
  Unity8 shows black screen with Qt 5.4.0

Status in ubuntu-ui-toolkit package in Ubuntu:
  New
Status in unity8 package in Ubuntu:
  New

Bug description:
  With bug #1403511 taken care of in Qt, apps do not anymore crash with
  Qt 5.4 and device does not anymore go into reboot loop. However,
  nothing is visible on the screen.

  It seems unity8, unity8-dash etc are all running. unity8.log attached

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