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Description of problem: gdm does not display anything besides the "7" background. Switching to another console and launchinx 'startx' opens gnome. Version-Release number of selected component (if applicable): RHEL-7.0 kernel kernel-3.10.0-123.el7.x86_64, but also with other kernels: 3.10.0-205.el7.x86_64 3.10.0-175.el7.x86_64 RHEL-7.0 packages, but also with a system update of all packages to RHEL-7.1-20141121.n.0, like: gdm-3.8.4-32.el7.x86_64 gnome-shell-3.8.4-45.el7.x86_64 gnome-settings-daemon-3.8.6.1-12.el7.x86_64 How reproducible: Always Steps to Reproduce: Actual results: No GDM; the system is unusable -- not possible to reliably lock the screen when away (this might be a separate issue: most of the times, the correct password is being rejected when unlocking; and if Ctrl+Alt+Backspace is enabled, locking is ineffective) Expected results: A login prompt, a session Additional info: journalctl keeps displaying these errors: Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [drm:intel_pipe_config_compare] *ERROR* mismatch in adjusted_mode.crtc_clock (expected 148500, found 0) Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: ------------[ cut here ]------------ Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: WARNING: at drivers/gpu/drm/i915/intel_display.c:10197 check_crtc_state+0x235/0x350 [i915]() Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: pipe state doesn't match! Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: Modules linked in: btrfs zlib_deflate raid6_pq xor vfat msdos fat xfs libcrc32c binfmt_misc xt_CHECKSUM ipt_MASQUERADE tun Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi iwlwifi uvcvideo videobuf2_vmalloc videobuf2_memops serio_r Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: CPU: 2 PID: 5156 Comm: X Tainted: G W -------------- 3.10.0-205.el7.x86_64 #1 Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: Hardware name: LENOVO 20ARS19C0B/20ARS19C0B, BIOS GJET72WW (2.22 ) 02/21/2014 Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: ffff88030bb4b8d8 00000000ab68c73b ffff88030bb4b890 ffffffff81603c07 Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: ffff88030bb4b8c8 ffffffff8106e241 ffff88030ccc66f8 ffff88030bb4b968 Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: ffff880308d10000 ffff88030ccc6000 ffff880308d10340 ffff88030bb4b930 Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: Call Trace: Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffff81603c07>] dump_stack+0x19/0x1b Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffff8106e241>] warn_slowpath_common+0x61/0x80 Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffff8106e2bc>] warn_slowpath_fmt+0x5c/0x80 Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffffa021b7bb>] ? intel_pipe_config_compare+0x73b/0xab0 [i915] Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffffa021d0e5>] check_crtc_state+0x235/0x350 [i915] Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffffa022b92f>] intel_modeset_check_state+0x29f/0x7c0 [i915] Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffffa022bee5>] intel_set_mode+0x25/0x30 [i915] Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffffa022ce4c>] intel_crtc_set_config+0x92c/0xe00 [i915] Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffffa0068761>] drm_mode_set_config_internal+0x61/0xe0 [drm] Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffffa006c148>] drm_mode_setcrtc+0xe8/0x5c0 [drm] Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffffa005cb6c>] drm_ioctl+0x1ec/0x660 [drm] Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffff811d95e5>] do_vfs_ioctl+0x2e5/0x4c0 Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffff8126e70e>] ? file_has_perm+0xae/0xc0 Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffff811c89a1>] ? __sb_end_write+0x31/0x60 Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffff811d9861>] SyS_ioctl+0xa1/0xc0 Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: [<ffffffff81613c29>] system_call_fastpath+0x16/0x1b Nov 25 14:50:27 dhcp-25-60.brq.redhat.com kernel: ---[ end trace 81c2b0951231270d ]---
# journalctl -u gdm.service -- Logs begin at Tue 2014-11-25 13:44:26 CET, end at Tue 2014-11-25 15:52:11 CET. -- Nov 25 13:45:11 dhcp-25-60.brq.redhat.com systemd[1]: Starting GNOME Display Manager... Nov 25 13:45:11 dhcp-25-60.brq.redhat.com systemd[1]: Started GNOME Display Manager. Nov 25 13:45:36 dhcp-25-60.brq.redhat.com gdm[2450]: Failed to set slave bus name on parent: Timeout was reached
The kernel traceback is the same as in Bug 1163074 FWIW.
RHEL-7.1-Beta-1.5 has the same issue. In the startx mode, I encounter states when the screen flashes like a discotheque and I am able to reproduce it. But I doubt it will be dealt with, it is a low severity issue anyway. I wonder what have I done to the system to break the gdm.
GDM works now. I am trying to find what has caused this, but I do not know. I have tried this command (and similar yum commands), but I see only an error: # yum history packages-list Error: Failed history packages-list
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHEA-2015-2198.html