I tried 3.15.0-031500rc2_3.15.0-031500rc2.201404201435 and this issue is gone, but there are these errors that freeze X :
May 2 11:04:23 lisak nvidia-persistenced: Started (2206) May 2 11:05:21 lisak kernel: [ 71.350777] apt-check[2392]: segfault at 17bf6 ip 0000000000017bf6 sp 00007fff02f32fe8 error 14 in python3.4[400000+354000] May 2 11:05:21 lisak kernel: [ 71.492139] apport[2393]: segfault at 17bf6 ip 0000000000017bf6 sp 00007fffea07f428 error 14 in python3.4[400000+354000] May 2 11:05:21 lisak kernel: [ 71.492162] Process 2393(apport) has RLIMIT_CORE set to 1 May 2 11:05:21 lisak kernel: [ 71.492164] Aborting core May 2 11:05:23 lisak kernel: [ 73.351741] apport-checkrep[2396]: segfault at 17bf6 ip 0000000000017bf6 sp 00007fff28a26378 error 14 in python3.4[400000+354000] May 2 11:05:23 lisak kernel: [ 73.493450] apport[2397]: segfault at 17bf6 ip 0000000000017bf6 sp 00007fffc1208e38 error 14 in python3.4[400000+354000] May 2 11:05:23 lisak kernel: [ 73.493473] Process 2397(apport) has RLIMIT_CORE set to 1 May 2 11:05:23 lisak kernel: [ 73.493475] Aborting core May 2 11:05:23 lisak kernel: [ 73.623298] apport-checkrep[2398]: segfault at 17bf6 ip 0000000000017bf6 sp 00007fffb3c755c8 error 14 in python3.4[400000+354000] May 2 11:05:24 lisak kernel: [ 73.764436] apport[2399]: segfault at 17bf6 ip 0000000000017bf6 sp 00007fff1a649818 error 14 in python3.4[400000+354000] May 2 11:05:24 lisak kernel: [ 73.764459] Process 2399(apport) has RLIMIT_CORE set to 1 May 2 11:05:24 lisak kernel: [ 73.764461] Aborting core That might relate to issue https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1299390 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1310406 Title: [regression] Trusty kernel doesn't recognize GeForce 8600m GT nor with nouveau or nvidia drivers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1310406/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs