From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Wehrmeyer Subject: PROBLEM: new kernel 3.15.0-rc8 hangs completely with CONFIG_DRM_NOUVEAU enabled Date: Fri, 06 Jun 2014 22:58:21 +0200 Message-ID: <53922B6D.8020004@gmx.de> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------010902000802010300030808" Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Nouveau" To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org List-Id: nouveau.vger.kernel.org This is a multi-part message in MIME format. --------------010902000802010300030808 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hello, guys. First apologize my flaws, I am not a native English speaker and thus am prone to stupid errors. My box is an ASUSTek Notebook with Optimus capability (no, this is NOT about Optimus, I don't try to use Optimus yet, so please don't switch off here) with a running Gentoo. The first GPU is an Haswell-based Intel chip, the second one is a nVidia GeForce GTX 850M, the chip is a GM107M, which I understand to be a NV110. So far I have been using the 3.14.8 kernel without CONFIG_DRM_NOUVEAU enabled, as it was lacking of the maxwell support you guys added in May 2014. Today I wanted to try if I could use my card with the nouveau driver (no particular purpose in general, I just thought I could somehow support you guys. Xorg is told NOT to use any GPU except for the Intel one). Yet, the 3.15.0-rc8 which I downloaded this evening crashes on me when compiled with the CONFIG_DRM_NOUVEAU flag enabled during compilation. Crashes means: xdm starts, slim starts, I login to my Gentoo box, open a terminal emulator instance (exo-open --launch TerminalEmulator), and try to open /var/log/kern.log for any error messages - and if I got halfway through tipping that command, I'll be a lucky man. The notebook suddenly and unexpectedly hangs during these actions, the mouse does not response, the keyboard does not response, the display manager freezes completely (I can say that by a CPU usage tool that runs in my Xfce, and it freezes as well, so it's not just the input devices getting disconnected). ALT+SysReq+s/b does not work, syncing/rebooting fails, it does absolutely nothing. Disabling the CONFIG_DRM_NOUVEAU flag and recompiling removes the hang completely. I can reproduce the problem by just rebooting and logging in as descriped above. Files within the attached tar.gz: config-3.15.0-rc8-valhalla.old [non-working configuration] config-3.15.0-rc8-valhalla [working configuration] kern.log.old: Shows the boot process with the non-working configuration kern.log: Shows the boot process with the working configuration The output of lshw: description: Notebook product: N550JK (ASUS-NotebookSKU) vendor: ASUSTeK COMPUTER INC. version: 1.0 serial: width: 64 bits capabilities: smbios-2.7 dmi-2.7 ldt16 vsyscall32 configuration: boot=normal chassis=notebook family=N sku=ASUS-NotebookSKU uuid= Output of lspci -vvvvvk, everything not-VGA-like scrubed off: 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device 11cd Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- SERR- TAbort- SERR-