My dell E6510 is sometimes unable to wake up properly. it responds to ping and ssh though but the graphics keep black (backlight appears to turn on) here's what I get in dmesg : [ 3441.396659] Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV.ECR1] (Node ffff880227454c30), AE_TIME (20101013/psparse-537) [ 3441.396684] ACPI Error: Method parse/execution failed [\ECRB] (Node ffff880227454d98), AE_TIME (20101013/psparse-537) [ 3441.396702] ACPI Error: Method parse/execution failed [\EC0A] (Node ffff880227456118), AE_TIME (20101013/psparse-537) [ 3441.396717] ACPI Error: Method parse/execution failed [\_SB_.AMW0._WED] (Node ffff88022745dc80), AE_TIME (20101013/psparse-537) [ 3441.397153] dell-wmi: bad event status 0x11 [ 3442.127341] ACPI Exception: AE_TIME, Returned by Handler for [EmbeddedControl] (20101013/evregion-474) [ 3442.127369] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV.ECW1] (Node ffff880227454c80), AE_TIME (20101013/psparse-537) [ 3442.127387] ACPI Error: Method parse/execution failed [\ECWB] (Node ffff880227454de8), AE_TIME (20101013/psparse-537) [ 3442.127399] ACPI Error: Method parse/execution failed [\ECG6] (Node ffff880227454f28), AE_TIME (20101013/psparse-537) [ 3442.127412] ACPI Error: Method parse/execution failed [\_SB_.BAT0._BST] (Node ffff8802274566b8), AE_TIME (20101013/psparse-537) [ 3442.159590] ACPI Exception: AE_TIME, Evaluating _BST (20101013/battery-453) [ 3443.605080] EXT4-fs (dm-1): re-mounted. Opts: errors=remount-ro,commit=600 [ 3451.399549] eth0: no IPv6 routers present [ 3484.595229] EXT4-fs (dm-1): re-mounted. Opts: errors=remount-ro,commit=0 [ 4218.362206] [drm] nouveau 0000:01:00.0: Detected eDP-1, but failed init [ 4218.363009] [drm] nouveau 0000:01:00.0: DDC responded, but no EDID for eDP-1 [13655.368367] dell-wmi: Received unknown WMI event (0x11) [17880.230018] [drm] nouveau 0000:01:00.0: INIT_AUXCH: rd auxch fail -121 [17880.230835] [drm] nouveau 0000:01:00.0: INIT_AUXCH: rd auxch fail -121 [17880.231650] [drm] nouveau 0000:01:00.0: 0x5B5E: auxch rd fail: -121 [17880.232466] [drm] nouveau 0000:01:00.0: INIT_AUXCH: rd auxch fail -121 [17880.261950] dell-wmi: Received unknown WMI event (0x11)
*** This bug has been marked as a duplicate of bug 29552 ***