| duflu | That's confusing... | 00:57 |
|---|---|---|
| duflu | mir (0.15.1+15.10.20150903-0ubuntu1) wily; urgency=medium | 00:57 |
| duflu | [ Kevin Gunn ] | 00:57 |
| duflu | * released-rebuild-for-vivid-overlay | 00:57 |
| duflu | -- CI Train Bot <ci-train-bot@canonical.com> Thu, 03 Sep 2015 18:50:01 +0000 | 00:57 |
| duflu | but also doesn't change anything | 00:57 |
| robert_ancell | duflu, does XMir crash immediately when you launch it on a Nexus 4? | 01:11 |
| duflu | robert_ancell: Yeah, but I'm pretty sure I know why. I'll test and fix that today | 01:11 |
| robert_ancell | duflu, I'm wondering why I don't see that | 01:11 |
| duflu | No idea why your vivid would work cos it's the same package. | 01:11 |
| robert_ancell | perhaps you have newer drivers | 01:12 |
| duflu | robert_ancell: It might be you have an older kernel and your GLES version is < 3.0 | 01:12 |
| duflu | That would make epoxy skip over the problem | 01:12 |
| robert_ancell | glamor GL version: OpenGL ES 3.0 V@53.0 AU@ (CL@) according to the log | 01:12 |
| robert_ancell | duflu, do you know how to get XMir to dump core on the phone? It seems ulimit -c unlimited doesn't help. | 01:14 |
| duflu | robert_ancell: It's a Xorg thing and I forget... | 01:14 |
| robert_ancell | And I love how that log message always says "dumping core" regardless of if if actaually does | 01:14 |
| duflu | robert_ancell: Yes it's dumping with a limit of zero | 01:14 |
| robert_ancell | I guess that's technically true | 01:14 |
| duflu | robert_ancell: The "dumping" message would come from libc or something, userspace. But the actual dumping is a kernel operation. So blame libc for not checking the kernel setting | 01:15 |
| robert_ancell | yeah, it's libc | 01:16 |
| robert_ancell | The -core flag is supposed to dump core but still not getting any core files | 01:16 |
| * duflu wishes nobody ever stripped debug symbols. Although that would require abandoning bloaty things like C++ | 01:17 | |
| * robert_ancell wishes we'd abandon C++ | 01:18 | |
| duflu | Well Microsoft kind of did. Apple completely did. Google mostly did. But you'll find small traces of C++ in all of them | 01:19 |
| duflu | -completely +mostly | 01:19 |
| RAOF | Even C is often much much bigger with debug symbols. | 01:21 |
| duflu | RAOF: Yes but much bigger C is still single digit bloat. C++ is often double or even triple digits (1-2 orders of magnitude) | 01:34 |
| duflu | robert_ancell: I'll confirm today but it might be uninitialized memory. So zero for me gives a nice crash. You however might have got some readable bytes, which would let it keep going since it's just doing strcmp | 02:12 |
| robert_ancell | zero what? | 02:13 |
| duflu | robert_ancell: Zero result from glGetStringi | 02:13 |
| duflu | NULL | 02:13 |
| robert_ancell | duflu, I'm getting your crash now, but only after updating to get your colour fixes | 02:13 |
| duflu | robert_ancell: Probably not related but also uninitialized memory issues would move with different logic. I'll confirm soon | 02:14 |
| duflu | I was getting the same crash before that fix | 02:14 |
| robert_ancell | yeah, I'm thinking something like that. The changes don't seem likely to cause the problem. | 02:14 |
| robert_ancell | ok | 02:14 |
| duflu | robert_ancell: This is annoying. epoxy is doing the right thing only calling GLESv3 functions after it confirms the version is >= 3.0. And hybris is doing the right thing, only claiming to export GLESv2 functions (which unfortunately for mako report their version as 3.0) | 02:59 |
| duflu | We need to break one of them | 02:59 |
| robert_ancell | duflu, how is mako reporting gles? | 03:00 |
| duflu | robert_ancell: The mako driver lives in /android and libhybris proxies into it with its own libGLESv2.so | 03:00 |
| robert_ancell | duflu, which part is saying it does 3.0? | 03:01 |
| duflu | robert_ancell: The log message on startup :) | 03:02 |
| duflu | From the GL version string | 03:02 |
| robert_ancell | duflu, why don't we make hybris export 3.0? | 03:02 |
| duflu | robert_ancell: Because it's structured to implement v1 and v2 separately. Adding v3 under that structure is a very large undertaking | 03:02 |
| robert_ancell | duflu, ok, but that sounds like the correct solution right? Instead of breaking one thing. | 03:03 |
| duflu | robert_ancell: It would be a silly investment of a large amount of time to implement all of v3. I'd rather stick the one v3 function we need in the v2 implementation. Or work around elsewhere | 03:05 |
| duflu | Our code actually links to GLESv2. It's just because epoxy queries things dynamically that we find it using v3 functions | 03:05 |
| duflu | Actually fixing epoxy to limit its efforts to GLESv2 might be more sane | 03:06 |
| duflu | Yes, I will do a one line mod to epoxy so it will never crash when used with hybris... | 03:12 |
| duflu | RAOF: If I want to add an Ubuntu-only patch to a package that is still "copied from debian sid", who do I talk to? | 03:21 |
| robert_ancell | duflu, you just need anyone with appropriate upload permissions | 03:22 |
| robert_ancell | duflu, do you want to patch libepoxy? | 03:22 |
| duflu | robert_ancell: Lemme check it works first ;) | 03:23 |
| duflu | robert_ancell: Success! It now fails later, the same as on desktop with -egl | 03:25 |
| duflu | Although I might need a second epoxy fix for that. Let's see | 03:26 |
| duflu | robert_ancell: Here tis. This might change what you see too: https://bugs.launchpad.net/ubuntu/+source/libepoxy/+bug/1494240/comments/4 | 03:33 |
| ubot5 | Ubuntu bug 1494240 in xorg-server (Ubuntu) "Xmir crashes immediately on startup using glamor on Nexus4" [High,In progress] | 03:33 |
| robert_ancell | duflu, ta | 03:33 |
| robert_ancell | duflu, it looks like GLES3 uses libGLES2.so so it's probably not hard to add a few new wrapped functions in hybris | 04:25 |
| duflu | robert_ancell: Not worth the effort. The epoxy fix is logically correct for any GL version. So is safe to keep | 04:39 |
| robert_ancell | duflu, excepts it's a patch that will never be accepted upstream | 04:39 |
| duflu | robert_ancell: We could modify it to delete the unnecessary redundant (and crashing) code. That would also be correct | 04:40 |
| robert_ancell | duflu, which code is crashing? | 04:40 |
| duflu | robert_ancell: The strcmp after glGetStringi | 04:49 |
| duflu | robert_ancell: It's an Ubuntu-specific problem. I'm happy to make it an Ubuntu-only patch, or generalize a proposal to upstream under the title of "add support for libhybris" (which is not Ubuntu specific) | 04:50 |
| robert_ancell | duflu, but I don't get why we don't just make hybris wrap glGetStringi | 04:50 |
| duflu | Although I suspect more libepoxy fixes will be required first | 04:50 |
| robert_ancell | Then everything will just work right? | 04:50 |
| duflu | robert_ancell: Yes, but that's uglier and less correct. You're adding v3-only function to something that only claims to support v2 | 04:51 |
| duflu | Using glGetString instead of glGetStringi works for all versions. Nice and cleanly | 04:51 |
| duflu | Also, I think we might need to make additional patches to libepoxy's extension maps, unrelated to this | 04:52 |
| duflu | So can't escape needing to patch libepoxy | 04:53 |
| duflu | A third reason is it would help Mir a lot. But Mir can't use it till we fix it | 04:53 |
| * robert_ancell -> EOD | 05:17 | |
| === chihchun_afk is now known as chihchun | ||
| Mirv | is greyback on holidays? I now got the total hang on my personal use krillin again and filed bug #1494692 (I'll fill in more later) | 10:26 |
| ubot5 | bug 1494692 in mir (Ubuntu) "Total hang of the krillin with a graphics artifact" [Undecided,New] https://launchpad.net/bugs/1494692 | 10:26 |
| Mirv | (ok, yes he is) | 10:29 |
| === alan_g is now known as alan_g|lunch | ||
| === dandrader is now known as dandrader|afk | ||
| === dandrader|afk is now known as dandrader | ||
| kgunn | alf_: did pat's new log help any on that sms-freezes ui bug ? | 13:03 |
| alf_ | kgunn: I am going to look into that in a bit, I wanted to first publish the voice call blanking improvements | 13:04 |
| alf_ | kgunn: feel free to try out https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-014/+packages | 13:04 |
| kgunn | sure | 13:04 |
| kgunn | alf_: pat has a special love for us...did you see he logged another | 13:05 |
| kgunn | https://bugs.launchpad.net/bugs/1494513 | 13:05 |
| === alan_g|lunch is now known as alan_g | ||
| ubot5 | Ubuntu bug 1494513 in unity-system-compositor (Ubuntu) "When a message is received while the screen is dimmed it does not restore full brightness" [Undecided,New] | 13:05 |
| === dandrader is now known as dandrader|afk | ||
| === dandrader|afk is now known as dandrader | ||
| === dandrader is now known as dandrader|afk | ||
| === dandrader|afk is now known as dandrader | ||
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