On Tue, Nov 22, 2011 at 12:15:24PM +0200, Meelis Roos wrote:
3.0 worked fine, 3.1-rc9 worked fine, I think -rc10 too. 3.1 release hangs in random places while using X.
Core i5 660, lspci below. Running 64-bit Debian unstable.
lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation Core Processor DRAM Controller [8086:0040] (rev 02) 00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0042] (rev 02) 00:16.0 Communication controller [0780]: Intel Corporation 5 Series/3400 Series Chipset HECI Controller [8086:3b64] (rev 06) 00:16.3 Serial controller [0700]: Intel Corporation 5 Series/3400 Series Chipset KT Controller [8086:3b67] (rev 06) 00:19.0 Ethernet controller [0200]: Intel Corporation 82578DM Gigabit Network Connection [8086:10ef] (rev 05) 00:1a.0 USB Controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller [8086:3b3c] (rev 05) 00:1b.0 Audio device [0403]: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio [8086:3b56] (rev 05) 00:1c.0 PCI bridge [0604]: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 [8086:3b42] (rev 05) 00:1c.4 PCI bridge [0604]: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 [8086:3b4a] (rev 05) 00:1c.6 PCI bridge [0604]: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 7 [8086:3b4e] (rev 05) 00:1d.0 USB Controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller [8086:3b34] (rev 05) 00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev a5) 00:1f.0 ISA bridge [0601]: Intel Corporation 5 Series Chipset LPC Interface Controller [8086:3b0a] (rev 05) 00:1f.2 SATA controller [0106]: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller [8086:3b22] (rev 05) 3f:00.0 Host bridge [0600]: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers [8086:2c61] (rev 05) 3f:00.1 Host bridge [0600]: Intel Corporation Core Processor QuickPath Architecture System Address Decoder [8086:2d01] (rev 05) 3f:02.0 Host bridge [0600]: Intel Corporation Core Processor QPI Link 0 [8086:2d10] (rev 05) 3f:02.1 Host bridge [0600]: Intel Corporation Core Processor QPI Physical 0 [8086:2d11] (rev 05) 3f:02.2 Host bridge [0600]: Intel Corporation Core Processor Reserved [8086:2d12] (rev 05) 3f:02.3 Host bridge [0600]: Intel Corporation Core Processor Reserved [8086:2d13] (rev 05)
Bisected it to the following commit. Bisection may not be 100% correct because the issue happens at random, and most of the "good" revisions got some usage without problems. The "bad" bisects are the ones that hang.
6fbcfb3e467adb414e235eeefaeaf51ad12f2461 is the first bad commit commit 6fbcfb3e467adb414e235eeefaeaf51ad12f2461 Author: David Woodhouse dwmw2@infradead.org Date: Sun Sep 25 19:11:14 2011 -0700
intel-iommu: Workaround IOTLB hang on Ironlake GPU To work around a hardware issue, we have to submit IOTLB flushes while the graphics engine is idle. The graphics driver will (we hope) go to great lengths to ensure that it gets that right on the affected chipset(s)... so let's not screw it over by deferring the unmap and doing it later. That wouldn't be very helpful. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Can you retry with Keith's latest drm-intel-fixes, please? This workaround turned out to be a bit buggy, unfortunately. It's strange though that your bisect ended up on this commit, so maybe it's something else. Also please attach the full dmesg of a broken kernel (before it hangs).
Thanks, Daniel