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| duflu | Ha. Not a bug. | 08:43 |
|---|---|---|
| * duflu throws out broken mouse | 08:43 | |
| * alan_g discovers that "sudo unity-system-compositor --debug-without-dm" crashes horribly | 08:43 | |
| anpok | duflu: get a cat! | 08:51 |
| anpok | I can make the seg fault on the krillin ci runs go away | 08:51 |
| duflu | Don't need one. Have the internet full of cats. | 08:51 |
| anpok | it seems that.. if we dont load the mesa/kms platform unloading the android platform does not crash the driver | 08:52 |
| alan_g | anpok: that is likely the "horrible hack" | 09:09 |
| anpok | so.. | 09:10 |
| anpok | there are various ways | 09:10 |
| alan_g | The mesa driver code reloads itself with RTLD_GLOBAL | 09:10 |
| anpok | oh | 09:10 |
| anpok | i thought some tls related problems.. | 09:10 |
| anpok | another option might be to never unload the android platform if quirk->cannot_survive_unloading().. | 09:11 |
| anpok | or change the ci script to handle krillins runners differently.. disabling the probe .. removing the mesa modules .. all of which harms the effectifness of ci | 09:13 |
| alan_g | It is just on krillin? | 09:14 |
| anpok | yes | 09:14 |
| alan_g | A thought: what if you probe the android drivers before the mesa ones? | 09:15 |
| anpok | hm that is happening | 09:15 |
| alan_g | Rats! | 09:16 |
| anpok | brb | 09:17 |
| alan_g | anpok: for differential diagnosis, could you try the effect of commenting out the reload code - ensure_loaded_with_rtld_global() - in the mesa drivers? | 09:19 |
| anpok | alan_g: bingo | 10:04 |
| anpok | when do we need that? | 10:05 |
| anpok | could we delay that until we know this will be the platform to use? | 10:05 |
| anpok | arg thats in the init code of the library | 10:06 |
| alan_g | anpok: somewhere in the mesa code there's an attempt to find some symbol. (I think alf knows the details.) | 10:06 |
| anpok | oh or we might be able to split the mesa driver into pieces.. | 10:06 |
| anpok | since probing only needs udev.. | 10:06 |
| alan_g | anpok: RAOF promised to have a go at fixing mesa (eventually) as it also pulls in the X stack and other rubbish | 10:07 |
| alan_g | So delaying the hack is a possibility - depending on when mesa needs to find ... mir_server_mesa_egl_native_display_is_valid() | 10:11 |
| * alan_g wonders if there's a way to just publish that one symbol... | 10:13 | |
| anpok | alan_g: we only need that in nested, right? | 11:51 |
| alan_g | anpok: no for any mesa graphics (AIUI) | 11:52 |
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| anpok | vogons: https://code.launchpad.net/~andreas-pokorny/mir/fix-1506137/+merge/274708 | 13:26 |
| anpok | alan_g: it seems to work for the guest platform only - which makes sense since the drm-egl is builtin mesa and needs no mir interaction | 13:27 |
| alan_g | anpok: if that's true then great. (Not as good as getting rid of the hack, but at least it reduces the cases where it messes us up). | 13:32 |
| anpok | i still have vt switching issues.. so I tried it via two times cascaded launch-client... and it seemed to work | 13:34 |
| anpok | oh | 13:34 |
| anpok | thats not the right use case.. | 13:34 |
| anpok | I should have tried it with unity8 instead? | 13:35 |
| anpok | but still it should be true.. | 13:37 |
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| alf | robert_ancell: Hi! | 15:13 |
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