I have occasional crashes when changing with alt-ctl-tty the sessions. Up to now I have no real clue why. The spontaneous crashes using kmails are gone it seems after the latest bugfix. But I do get a bug warning from kernel. If somebody can understand about what it complains, I would be delighted to hear what the issue is and if I should or should not report it. [ 0.000000] ACPI BIOS Warning (bug): 32/64X length mismatch in FADT/ Pm1aControlBlock: 16/32 (20150930/tbfadt-623) [ 0.000000] ACPI BIOS Warning (bug): Invalid length for FADT/ Pm1aControlBlock: 32, using default 16 (20150930/tbfadt-704) Other ACPI warnings (but not claiming a bug) are: [ 19.623856] ACPI Warning: SystemIO range 0x0000000000001028-0x000000000000102F conflicts with OpRegion 0x0000000000001000-0x000000000000107F (\_SB_.PCI0.LPC_.PMIO) (20150930/ utaddress-254) [ 19.623860] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 19.623868] ACPI Warning: SystemIO range 0x00000000000011C0-0x00000000000011CF conflicts with OpRegion 0x0000000000001180-0x00000000000011FF (\_SB_.PCI0.LPC_.LPIO) (20150930/ utaddress-254) [ 19.623869] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 19.623871] ACPI Warning: SystemIO range 0x00000000000011B0-0x00000000000011BF conflicts with OpRegion 0x0000000000001180-0x00000000000011FF (\_SB_.PCI0.LPC_.LPIO) (20150930/ utaddress-254) [ 19.623877] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 19.623878] ACPI Warning: [ 19.623882] SystemIO range 0x0000000000001180-0x00000000000011AF conflicts with OpRegion 0x0000000000001180-0x00000000000011FF (\_SB_.PCI0.LPC_.LPIO) (20150930/utaddress-254) [ 19.623883] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 19.623885] lpc_ich: Resource conflict(s) found affecting gpio_ich Could these be responsible for these "black screens" after tty changing? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org