Description of problem:
My system:
Linux 3.19.3-200.fc21.x86_64 #1 SMP 
Thu Mar 26 21:39:42 UTC 2015 
x86_64 x86_64 x86_64 GNU/Linux

CPU			:  Intel(R) Core(TM) i7-3770S CPU @ 3.10GHz
MOTHER BOARD	:  ASRock H77M-ITX 
BIOS			:  American Megatrends Inc. P1.90

I kept my system running for couple of weeks, it goes to hebyration automaticly.
Once (10.04.2015) I wanted to reboot it.
Everything when well before I was have to login under my account to GNOME shell. It refused to allow me to enter, 
But under root account it easily happens.

Additional info:
reporter:       libreport-2.3.0
kernel BUG at drivers/gpu/drm/drm_crtc.c:536!
invalid opcode: 0000 [#1] SMP 
Modules linked in: bnep bluetooth rfkill fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support intel_rapl iosf_mbi snd_hda_intel x86_pkg_temp_thermal snd_hda_controller coretemp snd_hda_codec kvm_intel kvm snd_hwdep snd_seq serio_raw nuvoton_cir snd_seq_device i2c_i801 tpm_tis
 rc_core tpm snd_pcm snd_timer mei_me snd mei shpchp ie31200_edac lpc_ich edac_core soundcore mfd_core nfsd auth_rpcgss nfs_acl lockd grace binfmt_misc sunrpc dm_crypt i915 i2c_algo_bit drm_kms_helper drm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel r8169 mii video
CPU: 3 PID: 2081 Comm: gdbus Not tainted 3.19.3-200.fc21.x86_64 #1
Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./H77M-ITX, BIOS P1.90 03/04/2014
task: ffff88040a7609b0 ti: ffff8800c76d4000 task.ti: ffff8800c76d4000
RIP: 0010:[<ffffffffa008f439>]  [<ffffffffa008f439>] drm_framebuffer_free_bug+0x9/0x10 [drm]
RSP: 0018:ffff8800c76d7b18  EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88040c091800 RCX: 0000000000000000
RDX: 0000000000000040 RSI: 0000000000000000 RDI: ffff880409d020c8
RBP: ffff8800c76d7b18 R08: ffff8803db453e70 R09: 0000000000000000
R10: ffff88039b5e1900 R11: ffff88040b583400 R12: ffff880409d020c0
R13: ffff880036a85e00 R14: ffff88003681ab78 R15: ffff88003681a888
FS:  00007f4ebf334700(0000) GS:ffff88041f2c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05dab20a08 CR3: 0000000001c11000 CR4: 00000000001407e0
Stack:
 ffff8800c76d7b38 ffffffffa009132d ffff88040c091800 ffff88003681a800
 ffff8800c76d7b78 ffffffffa00f0e01 ffff88003681a8d0 ffff880036a85e00
 ffff88003681a800 ffff88040b581ed0 ffff88040b581ec8 ffff88003681a888
Call Trace:
 [<ffffffffa009132d>] drm_plane_force_disable+0x9d/0xd0 [drm]
 [<ffffffffa00f0e01>] restore_fbdev_mode+0x51/0xf0 [drm_kms_helper]
 [<ffffffffa00f2ed9>] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
 [<ffffffffa018120e>] intel_fbdev_restore_mode+0x1e/0x50 [i915]
 [<ffffffffa01a67ee>] i915_driver_lastclose+0xe/0x20 [i915]
 [<ffffffffa0083d0e>] drm_lastclose+0x2e/0x150 [drm]
 [<ffffffffa00840f8>] drm_release+0x2c8/0x4b0 [drm]
 [<ffffffff8121b5af>] __fput+0xdf/0x1f0
 [<ffffffff8121b70e>] ____fput+0xe/0x10
 [<ffffffff810b8a94>] task_work_run+0xd4/0xf0
 [<ffffffff8109e492>] do_exit+0x302/0xa70
 [<ffffffff8122ef60>] ? poll_select_copy_remaining+0x150/0x150
 [<ffffffff8109ec95>] do_group_exit+0x45/0xb0
 [<ffffffff810aa74c>] get_signal+0x27c/0x610
 [<ffffffff8125a98c>] ? fsnotify+0x3ac/0x580
 [<ffffffff81014527>] do_signal+0x37/0x750
 [<ffffffff810c83e0>] ? wake_up_state+0x20/0x20
 [<ffffffff81014ca9>] do_notify_resume+0x69/0xb0
 [<ffffffff81774ca7>] int_signal+0x12/0x17
Code: 33 6e e1 4c 89 e7 e8 17 b0 16 e1 48 83 c4 08 5b 41 5c 41 5d 5d c3 66 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 <0f> 0b 0f 1f 44 00 00 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb 48 
RIP  [<ffffffffa008f439>] drm_framebuffer_free_bug+0x9/0x10 [drm]
 RSP <ffff8800c76d7b18>

Potential duplicate: bug 1205650