| RAOF | WIN! I can now corrupt the function parameters on IA32 rather just calling off into random memory! | 04:58 |
|---|---|---|
| tjaalton | RAOF_: fixing the TLS bug? | 07:33 |
| === RAOF_ is now known as RAOF | ||
| RAOF | tjaalton: Yup. I may be slightly insane, because I think I'm beginning to understand mesa dispatch. | 09:35 |
| tjaalton | <g> | 09:41 |
| RAOF | Although I'm *not* sure why I appear to be corrupting all the arguments on IA32. | 09:41 |
| RAOF | On x86-64 it was because I wasn't saving enough registers, but (a) registers aren't *used* in passing arguments in IA32 and (b) I'm only clobbering %eax, which is safe to clobber, and (c) I'm not even really doing that. | 09:43 |
| RAOF | Because, obviously, on IA32 mesa calculates the base address of the dispatch table at init time and writes that directly into the function definitions. | 09:46 |
| tjaalton | glad I don't do assembler. at all :P | 09:46 |
| tjaalton | some mips years ago | 09:46 |
| RAOF | There's some sparc assembler here too. That'll be broken also, but sucks to be on sparc. | 09:47 |
| mvo | RAOF: ohhh, progress on the mesa issue? that is excellent! that will make my software-center users happy :) | 09:51 |
| RAOF | Yeah, sorry about that. | 09:51 |
| mvo | well, not really your fault, the joy of natty. I'm happy that you dived so deep into it for the fix | 09:52 |
| mvo | sounds very painful to debug it | 09:52 |
| RAOF | I get to learn all sorts of arcana about IA32 assembly, the System V ABI, the TLS ABI… | 09:54 |
| RAOF | And that x86-64 assembler is much nicer. | 09:54 |
| RAOF | And now, as I stare at gdb disassembly, I realise that it's time to learn more about relocations and the PLT… | 09:55 |
| mvo | geeh, good luck | 09:57 |
| jcristau | sparc asm isn't nearly as horrific as x86 | 10:01 |
| RAOF | More difficult for me to test, though. | 10:12 |
| === seb128_ is now known as seb128 | ||
| tseliot | RAOF: did you rebuild the X packages in the ubuntu-x-swat PPA bumping the video ABI number? | 15:39 |
| lag | cnd: Good day | 15:41 |
| lag | cnd: Did you receive my email with the non-empty device.* files? | 15:41 |
| cnd | lag, yep, but it's a bit low in the queue :( | 15:41 |
| cnd | I'm trying to get through a backlog | 15:41 |
| cnd | and I have to get a root canal in a few hours too | 15:41 |
| cnd | so... | 15:41 |
| cnd | hopefully tomorrow? | 15:42 |
| lag | Sure | 15:43 |
| lag | Good luck with the root canal - rather you than me | 15:43 |
| cnd | bryceh_, tjaalton: would one of you be able to upload an update to python-libavg? (bug 733247) | 15:59 |
| ubot4` | Launchpad bug 733247 in libavg (Ubuntu) "Please upgrade to libavg v1.5.4 (affects: 1) (heat: 10)" [Undecided,Confirmed] https://launchpad.net/bugs/733247 | 15:59 |
| cnd | I can prepare a source package if you need | 16:00 |
| jcristau | i thought libavg was broken by mesa tls fun anyway? | 16:00 |
| cnd | jcristau, I gave them a hacky patch :) | 16:01 |
| cnd | it literally loads libstdc++ using python before doing any opengl stuff | 16:01 |
| jcristau | ewww :) | 16:01 |
| === yofel_ is now known as yofel | ||
| tjaalton | cnd: hey, I'm not at my ws atm, so can't sponsor it until maybe 2.5h from now | 17:10 |
| cnd | tjaalton, I won't be around then | 17:20 |
| cnd | maybe tomorrow | 17:20 |
| tjaalton | cnd: put the package somewhere and I'll download it then | 17:31 |
| cnd | tjaalton, ok, I'll get to that in a bit | 17:33 |
| cnd | I have to leave now | 17:33 |
| tjaalton | cnd: ok | 17:49 |
| sweeze | with latest xserver-xorg-video-ati from xorg-edgers, ForceGallium=true in xorg.conf no longer works. I've temporarily copied /usr/lib/dri/r600g_dri.so over r600_dri.so, but what's the "right" way to get the gallium driver from the packages to be used? | 19:38 |
| sweeze | (braid w/ s3tc libtxc_dxtn.so hack seems to work w/ gallium, but not classic drivers) | 19:39 |
| Sarvatt | sweeze: it's always used by default, /usr/lib/dri/r600_dri.so is the gallium one. if you have an r600g_dri.so its hanging around from an old build | 19:46 |
| sweeze | Sarvatt: hmm... looks like not true in libgl1-mesa-dri package in ppa? | 19:53 |
| sweeze | `strings /usr/lib/dri/r600_dri.so |grep -i gallium` is empty | 19:53 |
| sweeze | but on r600g_dri, gallium strings show up | 19:53 |
| Prf_Jakob | Is there a ppa to get a kernel capable of KMS on radeon cayman cards? | 21:44 |
| Sarvatt | hmm good question.. lets see | 21:45 |
| Sarvatt | http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-next/ | 21:46 |
| Prf_Jakob | ah cool | 21:47 |
| === unitylogger is now known as gnomeshellogger | ||
| Prf_Jakob | Whats the magic ppa name for that repo? | 21:47 |
| bryceh_ | it's not actually a true PPA | 21:47 |
| Sarvatt | linux-firmware 1.48+ from natty has the firmware if you aren't on natty | 21:48 |
| Sarvatt | yeah have to install it manually | 21:48 |
| Prf_Jakob | ah | 21:48 |
| Prf_Jakob | Yeah maverick | 21:48 |
| Sarvatt | https://launchpad.net/ubuntu/+source/linux-firmware/1.48/+buildjob/2297992 | 21:49 |
| Sarvatt | can grab the firmware deb there | 21:49 |
| Prf_Jakob | Thanks! | 21:50 |
| Sarvatt | there's no accel or anything yet though | 21:52 |
| Prf_Jakob | I just want a native resolution on my 30" :-/ | 21:53 |
| Prf_Jakob | Hmm I guess I need some xf86-video-ati bits to go with that as well. | 22:03 |
| Prf_Jakob | Hmm that kernel just made my screen go black and the network didn't work :-/ | 22:13 |
| Sarvatt | sudo apt-get build-dep xserver-xorg-video-ati && dget -u -x https://launchpad.net/~xorg-edgers/+archive/ppa/+files/xserver-xorg-video-ati_6.14.99%2Bgit20110307.6319a33c-0ubuntu0sarvatt~maverick.dsc && cd xserver-xorg-video-ati-6.14.99+git20110307.6319a33c && fakeroot debian/rules binary | 22:14 |
| Prf_Jakob | Sarvatt: awesome! | 22:14 |
| RAOF | bryceh_, tjaalton, Sarvatt: What do you think of uploading a temporary fix for the mesa tls annoyance? I've got it for platforms without asm optimisations and for x86-64 asm. IA32 is still kicking my arse, and I don't care about sparc. | 22:22 |
| RAOF | We could upload a mesa with assembly disabled on i386, which would work. | 22:23 |
| bryceh_ | RAOF, sure | 22:23 |
| bryceh_ | RAOF, in fact we should probably start pushing buttons on the xserver update, what do you think? | 22:24 |
| RAOF | Probably, yeah. | 22:24 |
| tjaalton | RAOF: i guess nothing would break?-) | 22:24 |
| RAOF | Although you might know better; I've been diving through things man was not meant to know. | 22:25 |
| Sarvatt | think we're going to end up just disabling tls completely at this rate? | 22:25 |
| === gnomeshellogger is now known as TheHarald | ||
| RAOF | Sarvatt: Why? It works for x86-64 ;) | 22:26 |
| RAOF | And that's an ABI change that'll freak out the server, IIUC. | 22:26 |
| bryceh_ | RAOF, I've been distracting myself with some toolsmithing work lately, but I think what I should do is test booting the ppa on a few machines, then put out the usual announcement, and maybe tues/weds we can do the uploads | 22:27 |
| RAOF | bryceh_: Sounds reasonable. | 22:28 |
| RAOF | I'll need others to help with the uploads, as usual; the DMB didn't get a quorum last night :( | 22:29 |
| tjaalton | meh | 22:30 |
| bryceh_ | RAOF, not a problem | 22:30 |
| jcristau | RAOF: i think the enable-glx-tls server is happy to load drivers built with --disable-glx-tls | 22:53 |
| jcristau | RAOF: it's the other way around that doesn't work | 22:53 |
| RAOF | Ah, ok. | 22:53 |
| jcristau | (because tls enabled drivers require symbols only found in tls enabled loaders) | 22:54 |
| RAOF | Right. | 22:54 |
| tjaalton | ideas how this is possible http://launchpadlibrarian.net/66332175/DpkgTerminalLog.txt | 23:06 |
| tjaalton | from bug 734676 | 23:06 |
| ubot4` | Launchpad bug 734676 in xorg-server (Ubuntu) "package xserver-xorg-core 2:1.9.99.902-2ubuntu2 failed to install/upgrade: installing xserver-xorg-core would break existing software (affects: 1) (heat: 6)" [Undecided,New] https://launchpad.net/bugs/734676 | 23:07 |
| tjaalton | only thing I can think of is a very stale mirror | 23:07 |
| bryceh_ | tjaalton, xserver-xorg-video-tseng provides xserver-xorg-video-8 and is present and installed. | 23:18 |
| bryceh_ | tjaalton, perhaps uninstall -tseng and try again? | 23:19 |
| tjaalton | bryceh_: yeah, but the archive should have the new one | 23:19 |
| bryceh_ | tjaalton, PPAs involved? | 23:19 |
| tjaalton | I guess there's no other reason than a stale mirror then | 23:19 |
| tjaalton | no idea, not mine | 23:19 |
| bryceh_ | I wonder if having -fglrx installed would produce that error message (although obviously not in this case since it's -intel) | 23:20 |
| tjaalton | i guess it's proven that fglrx/nvidia has been removed on upgrade :) | 23:21 |
| bryceh_ | heh, ok true | 23:22 |
| tjaalton | i'll close this on | 23:22 |
| tjaalton | e | 23:22 |
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