Additional info:
libreport version: 2.0.14
abrt_version:   2.0.13
cmdline:        BOOT_IMAGE=/vmlinuz-3.5.4-2.fc17.x86_64 root=UUID=b9c05a14-3752-4fb2-8493-6f7ce0967b52 ro rd.md=0 rd.lvm=0 rd.dm=0 SYSFONT=True KEYTABLE=uk rd.luks=0 LANG=en_US.UTF-8 rhgb quiet raid=noautodetect rootfstype=ext4 libahci.ignore_sss=1 selinux=0
kernel:         3.5.4-2.fc17.x86_64

kernel_tainted_long:
:Proprietary module has been loaded.
:Taint on warning.
:Modules from drivers/staging are loaded.

backtrace:
:WARNING: at drivers/gpu/drm/i915/intel_display.c:906 intel_enable_pipe+0xc8/0x190 [i915]()
:Hardware name: Inspiron 1525                   
:PLL state assertion failure (expected on, current off)
:Modules linked in: tun michael_mic arc4 fuse ebtable_nat ebtables vboxpci(O) vboxnetadp(O) vboxnetflt(O) ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle bridge stp llc vboxdrv(O) lockd bnep sunrpc bluetooth rfkill be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3 mdio libcxgbi ib_iser rdma_cm ib_addr iw_cm ib_cm ib_sa ib_mad ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nf_conntrack_ipv4 nf_defrag_ipv4 ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev media lib80211_crypt_tkip snd_hda_codec_idt wl(PO) snd_hda_codec_hdmi coretemp kvm_intel snd_hda_intel snd_hda_codec snd_hwdep r592 lpc_ich kvm snd_seq snd_seq_device memstick snd_pcm snd_page_alloc snd_timer snd mfd_core sky2 lib80211 soundcore dell_laptop dell_wmi microcode i2c_i801 serio_raw sparse_keymap dcdbas uinput binfmt_misc firewire_ohci sdhci_pci sdhci mm
:c_core firewire_core crc_itu_t wmi i915 video i2c_algo_bit drm_kms_helper drm i2c_core [last unloaded: scsi_wait_scan]
:Pid: 1069, comm: Xorg Tainted: P        WC O 3.5.4-2.fc17.x86_64 #1
:Call Trace:
: [<ffffffff8105864f>] warn_slowpath_common+0x7f/0xc0
: [<ffffffff81058746>] warn_slowpath_fmt+0x46/0x50
: [<ffffffffa0092648>] intel_enable_pipe+0xc8/0x190 [i915]
: [<ffffffffa00961df>] i9xx_crtc_mode_set+0xa0f/0x10f0 [i915]
: [<ffffffffa0090441>] intel_crtc_mode_set+0x71/0xb0 [i915]
: [<ffffffffa0066f39>] drm_crtc_helper_set_mode+0x2f9/0x500 [drm_kms_helper]
: [<ffffffffa0068149>] drm_crtc_helper_set_config+0x9f9/0xb10 [drm_kms_helper]
: [<ffffffff8108a4e6>] ? ttwu_do_activate.constprop.83+0x66/0x70
: [<ffffffffa00646bb>] drm_fb_helper_pan_display+0x8b/0xe0 [drm_kms_helper]
: [<ffffffff81