This ought to be the relevant parts of the logfile:
feb 05 00:06:10 linux-ncuh systemd-sleep[5105]: INFO: Skip running /usr/lib/systemd/system-sleep/grub2.sleep for suspend
feb 05 00:06:10 linux-ncuh systemd[1]: Starting Suspend…
feb 05 00:06:10 linux-ncuh systemd[1]: Reached target Sleep.
feb 05 00:06:10 linux-ncuh nm-dispatcher[5090]: Dispatching action ‘down’ for wlan0
feb 05 00:06:10 linux-ncuh systemd[1]: Started Network Manager Script Dispatcher Service.
feb 05 00:06:10 linux-ncuh dbus[1020]: [system] Successfully activated service ‘org.freedesktop.nm_dispatcher’
feb 05 00:06:10 linux-ncuh systemd[1]: Starting Network Manager Script Dispatcher Service…
feb 05 00:06:10 linux-ncuh kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: <warn> Failed to GDBus.Error:fi.w1.wpa_supplicant1.NotConnected: This interface is not connected: disconnect.
feb 05 00:06:10 linux-ncuh dbus[1020]: [system] Activating via systemd: service name=‘org.freedesktop.nm_dispatcher’ unit=‘dbus-org.freedesktop.nm-dispatcher.service’
feb 05 00:06:10 linux-ncuh kernel: IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: <info> (eth0): device state change: unavailable → unmanaged (reason ‘sleeping’) [20 10 37]
feb 05 00:06:10 linux-ncuh kernel: nouveau 0000:01:00.0: DRM: resuming client object trees…
feb 05 00:06:10 linux-ncuh kernel: nouveau 0000:01:00.0: priv: HUB0: 10ecc0 ffffffff (1b40822c)
feb 05 00:06:10 linux-ncuh kernel: nouveau 0000:01:00.0: priv: HUB0: 6013d4 ffff573f (1f408200)
feb 05 00:06:10 linux-ncuh kernel: nouveau 0000:01:00.0: DRM: resuming kernel object tree…
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: <info> NetworkManager state is now ASLEEP
feb 05 00:06:10 linux-ncuh nscd[1047]: 1047 monitored file /etc/resolv.conf
was moved into place, adding watch
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: You can find my version in /etc/resolv.conf.netconfig …
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: ATTENTION: You have modified /etc/resolv.conf. Leaving it untouched…
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: <13>Feb 5 00:06:10 dns-resolver: You can find my version in /etc/resolv.conf.netconfig
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: <13>Feb 5 00:06:10 dns-resolver: ATTENTION: You have modified /etc/resolv.conf. Leaving it untouched…
feb 05 00:06:10 linux-ncuh dns-resolver[5033]: You can find my version in /etc/resolv.conf.netconfig
feb 05 00:06:10 linux-ncuh dns-resolver[5031]: ATTENTION: You have modified /etc/resolv.conf. Leaving it untouched…
feb 05 00:06:10 linux-ncuh kernel: cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
feb 05 00:06:10 linux-ncuh kernel: cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
feb 05 00:06:10 linux-ncuh kernel: cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
feb 05 00:06:10 linux-ncuh kernel: cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
feb 05 00:06:10 linux-ncuh kernel: cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
feb 05 00:06:10 linux-ncuh kernel: cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
feb 05 00:06:10 linux-ncuh kernel: cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz, 92000 KHz AUTO), (N/A, 2000 mBm), (N/A)
feb 05 00:06:10 linux-ncuh kernel: cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
feb 05 00:06:10 linux-ncuh kernel: cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
feb 05 00:06:10 linux-ncuh kernel: cfg80211: DFS Master region: unset
feb 05 00:06:10 linux-ncuh kernel: cfg80211: World regulatory domain updated:
feb 05 00:06:10 linux-ncuh avahi-daemon[1032]: Interface wlan0.IPv4 no longer relevant for mDNS.
feb 05 00:06:10 linux-ncuh avahi-daemon[1032]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 192.168.1.64.
feb 05 00:06:10 linux-ncuh avahi-daemon[1032]: Withdrawing address record for 192.168.1.64 on wlan0.
feb 05 00:06:10 linux-ncuh avahi-daemon[1032]: Interface wlan0.IPv6 no longer relevant for mDNS.
feb 05 00:06:10 linux-ncuh kernel: wlan0: deauthenticating from 30:91:8f:97:f5:d1 by local choice (Reason: 3=DEAUTH_LEAVING)
feb 05 00:06:10 linux-ncuh avahi-daemon[1032]: Leaving mDNS multicast group on interface wlan0.IPv6 with address fe80::1acf:5eff:fe48:ffd.
feb 05 00:06:10 linux-ncuh avahi-daemon[1032]: Withdrawing address record for fe80::1acf:5eff:fe48:ffd on wlan0.
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: <info> (wlan0): DHCPv4 state changed bound → done
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 2133
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: <info> (wlan0): device state change: activated → unmanaged (reason ‘sleeping’) [100 10 37]
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: <info> sleeping…
feb 05 00:06:10 linux-ncuh NetworkManager[1150]: <info> sleep requested (sleeping: no enabled: yes)
feb 05 00:06:10 linux-ncuh systemd-logind[1058]: Lid closed.
There is only one line of text before this, telling me when the logfile starts and ends.
As to the graphics hardware, the command /usr/sbin/hwinfo --gfxcard gives the following text:
08: PCI 02.0: 0300 VGA compatible controller (VGA)
[Created at pci.378]
Unique ID: _Znp.dJHy2PPnIb9
SysFS ID: /devices/pci0000:00/0000:00:02.0
SysFS BusID: 0000:00:02.0
Hardware Class: graphics card
Model: “Intel 4th Gen Core Processor Integrated Graphics Controller”
Vendor: pci 0x8086 “Intel Corporation”
Device: pci 0x0416 “4th Gen Core Processor Integrated Graphics Controller”
SubVendor: pci 0x17aa “Lenovo”
SubDevice: pci 0x3809
Revision: 0x06
Driver: “i915”
Driver Modules: “i915”
Memory Range: 0xd1000000-0xd13fffff (rw,non-prefetchable)
Memory Range: 0xc0000000-0xcfffffff (ro,non-prefetchable)
I/O Ports: 0x5000-0x503f (rw)
IRQ: 30 (38734 events)
Module Alias: “pci:v00008086d00000416sv000017AAsd00003809bc03sc00i00”
Driver Info #0:
Driver Status: i915 is active
Driver Activation Cmd: “modprobe i915”
Config Status: cfg=no, avail=yes, need=no, active=unknown
20: PCI 100.0: 0302 3D controller
[Created at pci.378]
Unique ID: VCu0.VEYgQPhgi3E
Parent ID: vSkL.T2uGoOSG4d3
SysFS ID: /devices/pci0000:00/0000:00:01.0/0000:01:00.0
SysFS BusID: 0000:01:00.0
Hardware Class: graphics card
Model: “nVidia GM108M [GeForce 840M]”
Vendor: pci 0x10de “nVidia Corporation”
Device: pci 0x1341 “GM108M [GeForce 840M]”
SubVendor: pci 0x17aa “Lenovo”
SubDevice: pci 0x3809
Revision: 0xa2
Driver: “nouveau”
Driver Modules: “drm”
Memory Range: 0xd0000000-0xd0ffffff (rw,non-prefetchable)
Memory Range: 0xa0000000-0xafffffff (ro,non-prefetchable)
Memory Range: 0xb0000000-0xb1ffffff (ro,non-prefetchable)
I/O Ports: 0x4000-0x4fff (rw)
Memory Range: 0xb2000000-0xb207ffff (ro,non-prefetchable,disabled)
IRQ: 27 (20 events)
Module Alias: “pci:v000010DEd00001341sv000017AAsd00003809bc03sc02i00”
Driver Info #0:
Driver Status: nouveau is active
Driver Activation Cmd: “modprobe nouveau”
Config Status: cfg=no, avail=yes, need=no, active=unknown
Attached to: #7 (PCI bridge)
Primary display adapter: #8
The desktop I am using is KDE (whatever version comes as standard). The tip of trying CTRL+ALT+F1 and CTRL+ALT+F7 did not achieve anything.