| anon^_^ | question regarding this ticket | 00:46 |
|---|---|---|
| anon^_^ | https://bugs.launchpad.net/ubuntu/+source/gcc-4.8/+bug/1750937 | 00:46 |
| ubot5` | Ubuntu bug 1750937 in gcc-4.8 (Ubuntu) "4.4.0-116 Kernel update on 2/21 breaks Nvidia drivers (on 14.04 and 16.04) due to outdated gcc-4.8" [Undecided,Fix released] | 00:46 |
| anon^_^ | not sure it's fixed | 00:47 |
| anon^_^ | updated to 3.13.0-143-lowlatency | 00:47 |
| anon^_^ | Mar 21 00:30:32 ****** kernel: [ 35.102961] nvidia: version magic '3.13.0-143-lowlatency SMP preempt mod_unload modversions ' should be '3.13.0-143-lowlatency SMP preempt mod_unload modversions retpoline ' | 00:48 |
| anon^_^ | nvidia driver fails to load | 00:48 |
| anon^_^ | problem appeared on kernel update | 00:49 |
| anon^_^ | also discussed here | 00:50 |
| anon^_^ | https://devtalk.nvidia.com/default/topic/1030325/nvidia-driver-installation-v387-26-on-ubuntu-16-04/ | 00:50 |
| anon^_^ | the described fix there doesn't seem to fix the issue | 00:50 |
| anon^_^ | gcc defaulted to gcc 5 | 01:21 |
| anon^_^ | switched gcc with update-alternatives to 4:4.8.2-1ubuntu6 | 01:22 |
| anon^_^ | testing | 01:22 |
| anon^_^ | also had to update dkms manually | 01:23 |
| anon^_^ | https://bugs.launchpad.net/ubuntu/+source/gcc-4.8/+bug/1750937/comments/30 | 01:23 |
| ubot5` | Ubuntu bug 1750937 in gcc-4.8 (Ubuntu) "4.4.0-116 Kernel update on 2/21 breaks Nvidia drivers (on 14.04 and 16.04) due to outdated gcc-4.8" [Undecided,Fix released] | 01:23 |
| anon^_^ | well, that didn't go well | 02:15 |
| anon^_^ | it does seem there is an issue with Trusty 14.04 and recent retpoline changes | 02:15 |
| anon^_^ | nvidia driver module is unloaded in 3.13.0-143-lowlatency | 02:16 |
| anon^_^ | modinfo nvidia-384 -k 3.13.0-143-lowlatency | 02:16 |
| anon^_^ | vermagic: 3.13.0-143-lowlatency SMP preempt mod_unload modversions | 02:16 |
| anon^_^ | no retpoline flag | 02:17 |
| anon^_^ | kern.log | 02:18 |
| anon^_^ | Mar 21 02:11:55 ****** kernel: [ 60.800613] nvidia: version magic '3.13.0-143-lowlatency SMP preempt mod_unload modversions ' should be '3.13.0-143-lowlatency SMP preempt mod_unload modversions retpoline ' | 02:18 |
| anon^_^ | that's after reverting to gcc 4:4.8.2-1ubuntu6 | 02:18 |
| anon^_^ | the re-install of 3.13.0-143-lowlatency, reboot, followed by reinstall of nvidia-384 | 02:19 |
| anon^_^ | ^then | 02:19 |
| anon^_^ | nobody around? | 02:20 |
| anon^_^ | until this is fixed by the kernel team, nvidia drivers are broken, unless a user manually edits vermagic.h | 02:23 |
| anon^_^ | # /usr/src/linux-headers-3.13.0-143/include/linux/vermagic.h | 02:25 |
| * anon^_^ sighs | 02:25 | |
| anon^_^ | after editing vermagic.sh using instructions here | 02:34 |
| anon^_^ | https://devtalk.nvidia.com/default/topic/1030325/nvidia-driver-installation-v387-26-on-ubuntu-16-04/ | 02:34 |
| anon^_^ | -#ifdef RETPOLINE | 02:34 |
| anon^_^ | +/* #ifdef RETPOLINE */ | 02:34 |
| anon^_^ | +#if 1 | 02:34 |
| anon^_^ | then dkms for nvidia driver was removed and re-installed | 02:35 |
| anon^_^ | sudo dkms remove nvidia-384/384.111 -k 3.13.0-143-lowlatency | 02:35 |
| anon^_^ | sudo dkms install nvidia-384/384.111 -k 3.13.0-143-lowlatency | 02:35 |
| anon^_^ | modinfo nvidia-384 -k 3.13.0-143-lowlatency | 02:35 |
| anon^_^ | vermagic: 3.13.0-143-lowlatency SMP preempt mod_unload modversions retpoline | 02:35 |
| anon^_^ | now retpoline shows up, which should permit kernel to load nvidia driver again | 02:35 |
| anon^_^ | hopefully the kernel team fixes this the right way. Most users won't be able to fix this themselves | 02:37 |
| apw | tseliot, ^ | 08:14 |
| tseliot | dijuremo: I don't think I have seen that problem. Have you filed a bug report about it? | 08:33 |
| juergh | tseliot, https://bugs.launchpad.net/ubuntu/+source/gcc-4.8/+bug/1750937 | 09:08 |
| ubot5` | Ubuntu bug 1750937 in gcc-4.8 (Ubuntu) "4.4.0-116 Kernel update on 2/21 breaks Nvidia drivers (on 14.04 and 16.04) due to outdated gcc-4.8" [Undecided,Fix released] | 09:08 |
| juergh | seems like a race between the kernel and gcc updates. | 09:08 |
| tseliot | juergh: oh, nothing I can do about it, I suppose | 09:36 |
| === Elimin8r is now known as Elimin8er | ||
| anon^_^ | apw, juergh it's not fixed | 19:49 |
| anon^_^ | sorry, going through channel log now | 19:49 |
| anon^_^ | i had to remove latest kernel update, nvidia drivers, re-install, *then* manually edit vermagic.h in the kernel source | 19:50 |
| anon^_^ | and then manually remove and re-install nvidia-384 entry in dkms | 19:51 |
| anon^_^ | reproducible even now | 19:52 |
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