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[SOLVED] 3.15.6 with Suspend-to-RAM = frozen boot at uevents
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BlueFusion
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PostPosted: Fri Aug 08, 2014 4:34 pm    Post subject: [SOLVED] 3.15.6 with Suspend-to-RAM = frozen boot at uevents Reply with quote

Hi folks,

I have 3 gentoo-sources kernels compiled on my desktop: 3.12-21-r1, 3.15.6, and 3.16.0. Shortly after installing 3.15.6, I disabled suspend to RAM in the kernel due to what I thought was an issue with one of my btrfs-RAIDed harddrives not responding well to it. This was determined to be not the case. I recompiled my 3.16.0 kernel with Suspend-to-RAM support this morning, no other options being changed.

Upon a reboot, the boot process froze at "Waiting for uevents to be processed..." indefinitely. I thought it was a fluke, reset the system, and tried again. Same thing. Rebooted into my 3.15.6 kernel which still had Suspend-to-RAM disabled and it booted up no problem.

I recompiled the 3.15.6 kernel with Suspend-to-RAM as well and it had the same effect - froze at the uvents task.

I had a 3.21.12-r1 kernel still in /boot and gave that a shot. This had Suspend-to-RAM enabled. It booted up no problem.

My /etc/udev/rules.d is empty. sys-fs/udev-215-r1 is installed

emerge --info --> click here

kernel .config --> click here

lspci --> click here
_________________
i7-940 2.93Ghz | ASUS P6T Deluxe (v.1) | 24GB Triple Channel RAM | nVidia GTX660
4x 4TB Seagate NAS HDD (Btrfs raid5) | 2x 120GB Samsung 850 EVO SSD (Btrfs raid1)


Last edited by BlueFusion on Fri Aug 08, 2014 8:43 pm; edited 1 time in total
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BlueFusion
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Joined: 08 Mar 2006
Posts: 371

PostPosted: Fri Aug 08, 2014 7:29 pm    Post subject: Reply with quote

Update.

I modified /etc/init.d/udev to remove udevadm settle --timeout=${udev_settle_timeout:-60} from line 119. The system boots up into a kernel with Suspend-to-RAM support, however I have a critical issue with my nVidia card at that point.

dmesg and /var/log/messages gets an infinitely repeating debug trace with the following at the end:
Quote:
NVRM: Can't find a IRQ for your NVIDIA card!
NVRM: Please check your BIOS settings.
NVRM: [Plug & Play OS] should be set to NO
NVRM: [Assign IRQ to VGA] should be set to YES
nvidia: probe of 0000:02:00.0 failed with error -1
NVRM: The NVIDIA probe routine failed for 1 device(s).
NVRM: None of the NVIDIA graphics adapters were initialized"
[drm] Module unloaded
NVRM: NVIDIA init module failed!


My BIOS does not have a user selection for VGA IRQ. I tried Plug & Play OS as Yes and as No. (It was always Yes previously).

Additionally, I tried running the original /etc/init.d/udev with the debug (suspend-enabled) kernel option. It gave me no additional clues as to the problem. Infact, I tried ALT + SysRq + M and it printed no memory information other than the header. It seemed to have completely stopped the system. And I tried a 10 second timeout. It continued, again, until I reset the system 5 minutes later.

What the hell is wrong here?
_________________
i7-940 2.93Ghz | ASUS P6T Deluxe (v.1) | 24GB Triple Channel RAM | nVidia GTX660
4x 4TB Seagate NAS HDD (Btrfs raid5) | 2x 120GB Samsung 850 EVO SSD (Btrfs raid1)
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BlueFusion
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PostPosted: Fri Aug 08, 2014 8:42 pm    Post subject: Reply with quote

Solved.

It almost always proves to be a simple problem in these cases. Apparently, the cause was I updated to a new version of the nvidia-drivers package while I was running my system without Suspend-to-RAM enabled in the kernel. This built the module without that feature and when that happens, it will NOT work at ALL on a kernel that does support that feature.
_________________
i7-940 2.93Ghz | ASUS P6T Deluxe (v.1) | 24GB Triple Channel RAM | nVidia GTX660
4x 4TB Seagate NAS HDD (Btrfs raid5) | 2x 120GB Samsung 850 EVO SSD (Btrfs raid1)
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