13:00NoReflex: hello! I'm getting some strange messages in the kernel message buffer: ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20141107/nsarguments-95)
13:00imirkin_: (or at least, not unexpected)
13:00imirkin_: and nothing to worry about
13:01NoReflex: googling the message indicates it is harmless but in my case it locks up the interface for about one second
13:01imirkin_: the message is not what locks things up :)
13:01imirkin_: let me guess...
13:01imirkin_: GK106 gpu which is powergated and doesn't come up with HUB_INIT timeout errors?
13:01NoReflex: and from what I can tell there are two messages for each freeze
13:02NoReflex: imirkin, my notebook is Asus UX52VS: Intel HD 4000 + nvidia 645M
13:02imirkin_: the message is likely to be seen when the discrete gpu is about to be powered up or down
13:02imirkin_: NoReflex: lspci -d 10de:
13:03NoReflex: imirkin, 01:00.0 VGA compatible controller: NVIDIA Corporation GK107M [GeForce GT 645M] (rev a1)
13:03imirkin_: i guessed wrong
13:03NoReflex: imirkin, if I reboot the problem usually goes away
13:03imirkin_: why is the discrete gpu getting powered on/off?
13:03imirkin_: are you plugging/unplugging external monitors?
13:04imirkin_: or running things with DRI_PRIME=1?
13:04NoReflex: from what I can tell it happens about once every few days (depending on something that is set during the boot) the issue may appear or not
13:04NoReflex: I'm not running anything with DRI_PRIME and not plugging / unplugging any monitors to the notebook
13:05imirkin_: are you using nouveau or blob drivers?
13:05imirkin_: (pastebin your dmesg)
13:05NoReflex: nouveau (mesa package in archlinux)
13:06NoReflex: imirkin, http://pastebin.com/AVswMaiK
13:07NoReflex: the are also two other messages: nouveau E[ PBUS][0000:01:00.0] MMIO write of 0x00000002 FAULT at 0x4188ac [ !ENGINE ]
13:07imirkin_: looks like something's waking it up every 11 seconds
13:07imirkin_: which is extremely odd, since... 11 isn't a common wait timeperiod
13:08NoReflex: it's also odd that very likely if I reboot the problem won't manifest
13:09imirkin_: NoReflex: do you have a system monitoring thing going on perhaps?
13:09imirkin_: anyways, i have no clue why this is happening =/
13:09imirkin_: sounds like sometimes when waking up, it suffers some sort of fail that freezes things up for a bit
13:09imirkin_: probably holds some giant lock or something
13:09NoReflex: the information that the messages appear when powering on / off can help me search further
13:10imirkin_: if you don't care about battery life, you can boot with nouveau.runpm=0
13:10imirkin_: which will disable the power-off-the-gpu logic
13:11NoReflex: I have conky runnign every 3 seconds but nothing with nvidia there
13:11imirkin_: things like running 'xrandr' are likely to wake the card up
13:11NoReflex: can I boot with the card powered off since I won't use it?
13:11imirkin_: or 'lspci'
13:11imirkin_: perhaps you can do that in your bios, not sure
13:12imirkin_: if you don't load nouveau, it'll stay powered on
13:12imirkin_: however you can issue an acpi_call manually somehow
13:12imirkin_: i forget the details
13:12imirkin_: you could use something like bumblebee instead of nouveau
13:20NoReflex: I will try to use bbswitch
13:20NoReflex: thank you!
14:32voxadam: I've been fighting GPU lockups on my workstation since I installed a new distro. It
14:33voxadam: It's running 4.0.0 final on a 550 Ti (NVCF).
14:33voxadam: Most times I don't see anything in my logs.
14:36voxadam: I did manage to capture something today.
14:36voxadam: Scroll to Apr 14 01:08:21
14:37imirkin_: that's a PDISP hang =/
14:37imirkin_: which means that you're unlikely to get screen updates after it happens
14:37imirkin_: even though everything else is working great
14:37voxadam: Yep. I can ssh in just fine.
14:37imirkin_: (including gpu rendering)
14:38voxadam: Very rarely if I try to switch to a vc right as it's crashing I can even use the terminal fine.
14:38imirkin_: coz i think it does in-place buffer updates
14:39imirkin_: instead of rendering successive frames and displaying them
14:40voxadam: There's something about KDE that triggers lockups really quickly but if I login to gnome I can use the system for hours sometimes.
14:46voxadam: I suppose I should expect little bugs like this when running an alpha distro.
14:47imirkin_: i doubt the distro has anything to do with it
14:47imirkin_: i'm guessing the KDE compositor does something that upsets nouveau or the underlying hw
14:48voxadam: Gnome triggers it too but not nearly as often. KDE does it in minutes, with Gnome it often takes hours.
14:48imirkin_: clearly KDE is better ;)
14:50tobijk: even if KDE is crap, it should not happen after all :D
14:50voxadam: I suppose that as of today my OS is beta, not alpha, although I've been updating an alpha system so who knows what it really is.
14:50Wonka: voxadam: tried rolling your own kernel?
14:50voxadam: tobijk: Probably not.
14:50voxadam: Wonka: I was thinking about it.
14:51Wonka: voxadam: to rule out patches from your distro...
14:51Wonka: just to be sure it isn't actually your distro.
14:51voxadam: I needed to compile some extra modules that fedora doesn't include so why not go all the way...
14:52tobijk: building a own kernel is pretty easy nowadays anyway
14:52voxadam: I've done it for years.
14:52Wonka: ack. if you deactivate some modules you won't ever need, it'll speed up the process a lot, though.
14:52Wonka: distro kernel configs are juge
14:53voxadam: I've always found configuring and compiling kernels somewhat relaxing.
14:53tobijk: text adventure?!
14:55voxadam: Someone should write a "make adventure-config" config interface for the Linux kernel.
14:55voxadam: make nethack-config
14:55Wonka: there's a maze of config options, all alike.
14:56voxadam: It is pitch black. You are likely to be eaten by an angry kernel dev.
14:56tobijk: make randconfig and start sorting after that :>
15:07voxadam: It never cesases to amaze me that the gziped kernel source now tips the scales at 118 megs.
15:07voxadam: When I started, around 1.2, it was a bit over 2 megs.
15:09imirkin_: how times have changed
15:09voxadam: Hmmm... Apparently some kind soul builds and maintains a vanial kernel for Fedora.
15:10voxadam: Maybe I'll put off a custom build for now.