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Description of problem: System will hang during boot when booting a 2.6.41 kernel. It works fine with a 2.6.40 kernel. Version-Release number of selected component (if applicable): Problem occurs with: kernel-2.6.41.1-1.fc15.x86_64 kernel-2.6.41.4-1.fc15.x86_64 Fine with: kernel-2.6.40.6-0.fc15.x86_64 How reproducible: Always. Steps to Reproduce: 1. Boot with specified kernel 2. Wait for it to hang (early in the boot process) Actual results: With kernel-2.6.41.4-1.fc15.x86_64: nouveau 0000:01:00.0: Invalid ROM contents [drm] nouveau 0000:01:00.0: 0x7291: i2c wrfail: -6 [drm] nouveau 0000:01:00.0: 0x72A3: i2c rdfail: -6 [drm:intel_dsm_platform_mux_info] *ERROR* MUX INFO call failed Welcome to emergency mode. (etc.) With kernel-2.6.41.1-1.fc15.x86_64: As above, but just hung instead of going to emergency mode, and also added: [drm_ironlake_update_pch_refclk] *ERROR* Enabled SSC on PCH [drm_ironlake_update_pch_refclk] *ERROR* Enabled SSC on PCH Expected results: Normal boot without hanging. Additional info: xorg-x11-drv-intel-2.15.0-5.fc15.x86_64 xorg-x11-drv-nouveau-0.0.16-24.20110324git8378443.fc15.x86_64 xorg-x11-server-common-1.10.4-1.fc15.x86_64 Dell Latitude E6520 Intel® Core™ i7-2720QM CPU @ 2.20GHz × 8 Intel® Sandybridge Mobile $ lsmod |egrep 'nou|i915' i915 378744 2 nouveau 545674 0 ttm 55273 1 nouveau drm_kms_helper 26474 2 i915,nouveau drm 193955 5 i915,nouveau,ttm,drm_kms_helper i2c_algo_bit 5006 2 i915,nouveau i2c_core 25712 7 videodev,i2c_i801,i915,nouveau,drm_kms_helper,drm,i2c_algo_bit mxm_wmi 1727 1 nouveau video 12340 2 i915,nouveau $ lspci -v |grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) 01:00.0 VGA compatible controller: nVidia Corporation GF108 [Quadro NVS 4200M] (rev a1) (prog-if 00 [VGA controller]) The following comment on another bug for this system is perhaps also relevant: https://bugzilla.redhat.com/show_bug.cgi?id=736895#c5
Note that with kernel-2.6.40.6-0.fc15.x86_64 it still gives the message: [drm:intel_dsm_platform_mux_info] *ERROR* MUX INFO call failed ...but not the other messages reported earlier, and it does not hang.
This same problem occurs when booting from a Fedora 16 live CD.
With Fedora 17 Alpha live CD it boots successfully. (Interestingly it still displays similar boot messages, though. Something like: i2c wrfail: -5)
It's working now in kernel-2.6.43.2-6.fc15.x86_64. (Also worked in kernel-2.6.42.9-2.fc15.x86_64, but was broken again in kernel-2.6.42.12-1.fc15.x86_64) Also, while I assumed it had totally hung, pressing escape showed the textual boot messages and it was waiting at the LUKS prompt, so it was only the graphical boot part that was broken.
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