0

Good morning,

I went through many Debian based distros only not to find any help or support for the issues I encountered, so I decided to go for Ubuntu.

DISCLAIMER: I feel like this is important. NONE of the issues listed below happened during ANY of the "live-media" trials that come with the installations. Actually, at least issue #2 did not happen even right after the installation had finished, because it didn't require a full reboot, only a restart.

Issue #1: My distro does not receive my Fn+F12 (WiFi hardware switch) leaving me uncapable of turning the WiFi on. (Also doesn't listen to Fn+F2 and Fn+F3 - which are the brightness dials, but Fn+F6/7/8 work - volume dials)

Issue #2: I have no way to turn WiFi on. I tried everything software-wise, therefore I believe it's only a matter of getting my keybord Fn combos to work. Here is my info-wireless:

########## wireless info START ##########

Report from: 13 Feb 2020 18:23 CET +0100

Booted last: 13 Feb 2020 00:00 CET +0100

Script from: 22 Oct 2018 03:34 UTC +0000

##### release ###########################

Distributor ID:    Ubuntu
Description:    Ubuntu 18.04.4 LTS
Release:    18.04
Codename:    bionic

##### kernel ############################

Linux 5.3.0-28-generic #30~18.04.1-Ubuntu SMP Fri Jan 17 06:14:09 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

Parameters: ro, quiet, splash, vt.handoff=1

##### desktop ###########################

Ubuntu

##### lspci #############################

02:00.0 Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)
    Subsystem: Samsung Electronics Co Ltd AR9485 Wireless Network Adapter [144d:4105]
    Kernel driver in use: ath9k

03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller [10ec:8136] (rev 05)
    Subsystem: Samsung Electronics Co Ltd RTL810xE PCI Express Fast Ethernet controller [144d:c709]
    Kernel driver in use: r8169

##### lsusb #############################

Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 0cf3:3004 Atheros Communications, Inc. AR3012 Bluetooth 4.0
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

##### PCMCIA card info ##################

##### rfkill ############################

0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: yes
1: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

##### secure boot #######################

SecureBoot disabled
Platform is in Setup Mode

##### lsmod #############################

ath3k                  24576  0
mxm_wmi                16384  1 nouveau
bluetooth             573440  34 btrtl,btintel,btbcm,bnep,ath3k,btusb,rfcomm
ath9k                 151552  0
ath9k_common           36864  1 ath9k
ath9k_hw              475136  2 ath9k_common,ath9k
ath                    36864  3 ath9k_common,ath9k,ath9k_hw
mac80211              847872  1 ath9k
cfg80211              704512  4 ath9k_common,ath9k,ath,mac80211
libarc4                16384  1 mac80211
wmi                    32768  2 mxm_wmi,nouveau

##### interfaces ########################

[/etc/network/interfaces]
auto lo
iface lo inet loopback

##### ifconfig ##########################

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback <MAC address> brd <MAC address>
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether <MAC 'enp3s0' [IF1]> brd <MAC address>
    inet 192.168.1.124/24 brd 192.168.1.255 scope global dynamic noprefixroute enp3s0
       valid_lft 42604sec preferred_lft 42604sec
    inet6 fe80::a2b1:6281:6f37:5455/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
3: wlp2s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether <MAC 'wlp2s0' [IF2]> brd <MAC address>

##### iwconfig ##########################

enp3s0    no wireless extensions.

lo        no wireless extensions.

wlp2s0    IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=off  
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off


##### route #############################

default via 192.168.1.1 dev enp3s0 proto dhcp metric 100
169.254.0.0/16 dev enp3s0 scope link metric 1000
192.168.1.0/24 dev enp3s0 proto kernel scope link src 192.168.1.124 metric 100

##### resolv.conf #######################

[777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']

nameserver 127.0.0.53
options edns0

##### network managers ##################

Installed:

    NetworkManager

Running:

root       669     1  0 18:10 ?        00:00:00 /usr/sbin/NetworkManager --no-daemon

##### NetworkManager info ###############

GENERAL.DEVICE:                         enp3s0
GENERAL.TYPE:                           ethernet
GENERAL.NM-TYPE:                        NMDeviceEthernet
GENERAL.VENDOR:                         Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT:                        RTL810xE PCI Express Fast Ethernet controller
GENERAL.DRIVER:                         r8169
GENERAL.DRIVER-VERSION:                 --
GENERAL.FIRMWARE-VERSION:               --
GENERAL.HWADDR:                         <MAC 'enp3s0' [IF1]>
GENERAL.MTU:                            1500
GENERAL.STATE:                          100 (connected)
GENERAL.REASON:                         0 (No reason given)
GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:1c.3/0000:03:00.0/net/enp3s0
GENERAL.IP-IFACE:                       enp3s0
GENERAL.IS-SOFTWARE:                    no
GENERAL.NM-MANAGED:                     yes
GENERAL.AUTOCONNECT:                    yes
GENERAL.FIRMWARE-MISSING:               no
GENERAL.NM-PLUGIN-MISSING:              no
GENERAL.PHYS-PORT-ID:                   --
GENERAL.CONNECTION:                     Wired connection 1
GENERAL.CON-UUID:                       b8dbe28f-7722-35e4-bc2c-90446cd5002f
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/1
GENERAL.METERED:                        no (guessed)
CAPABILITIES.CARRIER-DETECT:            yes
CAPABILITIES.SPEED:                     100 Mb/s
CAPABILITIES.IS-SOFTWARE:               no
CAPABILITIES.SRIOV:                     no
WIRED-PROPERTIES.CARRIER:               on
IP4.ADDRESS[1]:                         192.168.1.124/24
IP4.GATEWAY:                            192.168.1.1
IP4.ROUTE[1]:                           dst = 0.0.0.0/0, nh = 192.168.1.1, mt = 100
IP4.ROUTE[2]:                           dst = 192.168.1.0/24, nh = 0.0.0.0, mt = 100
IP4.ROUTE[3]:                           dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]:                             192.168.1.1
DHCP4.OPTION[1]:                        network_number = 192.168.1.0
DHCP4.OPTION[2]:                        requested_domain_search = 1
DHCP4.OPTION[3]:                        next_server = 192.168.1.1
DHCP4.OPTION[4]:                        requested_broadcast_address = 1
DHCP4.OPTION[5]:                        requested_domain_name = 1
DHCP4.OPTION[6]:                        host_name = gabriele-pc
DHCP4.OPTION[7]:                        requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[8]:                        vendor_unknown_3561 = 4:6:35:34:42:38:30:41:5:d:50:58:35:47:31:49:35:30:32:31:31:38:34:6:8:44:56:41:2d:35:35:39:32
DHCP4.OPTION[9]:                        requested_netbios_scope = 1
DHCP4.OPTION[10]:                       requested_time_offset = 1
DHCP4.OPTION[11]:                       dhcp_lease_time = 43320
DHCP4.OPTION[12]:                       expiry = 1581657195
DHCP4.OPTION[13]:                       requested_interface_mtu = 1
DHCP4.OPTION[14]:                       dhcp_message_type = 5
DHCP4.OPTION[15]:                       routers = 192.168.1.1
DHCP4.OPTION[16]:                       ip_address = 192.168.1.124
DHCP4.OPTION[17]:                       requested_subnet_mask = 1
DHCP4.OPTION[18]:                       requested_domain_name_servers = 1
DHCP4.OPTION[19]:                       requested_static_routes = 1
DHCP4.OPTION[20]:                       subnet_mask = 255.255.255.0
DHCP4.OPTION[21]:                       requested_wpad = 1
DHCP4.OPTION[22]:                       domain_name_servers = 192.168.1.1
DHCP4.OPTION[23]:                       requested_netbios_name_servers = 1
DHCP4.OPTION[24]:                       broadcast_address = 192.168.1.255
DHCP4.OPTION[25]:                       requested_routers = 1
DHCP4.OPTION[26]:                       requested_ms_classless_static_routes = 1
DHCP4.OPTION[27]:                       requested_ntp_servers = 1
DHCP4.OPTION[28]:                       requested_host_name = 1
DHCP4.OPTION[29]:                       dhcp_server_identifier = 192.168.1.1
IP6.ADDRESS[1]:                         fe80::a2b1:6281:6f37:5455/64
IP6.GATEWAY:                            --
IP6.ROUTE[1]:                           dst = ff00::/8, nh = ::, mt = 256, table=255
IP6.ROUTE[2]:                           dst = fe80::/64, nh = ::, mt = 256
IP6.ROUTE[3]:                           dst = fe80::/64, nh = ::, mt = 100
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{3}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]:   b8dbe28f-7722-35e4-bc2c-90446cd5002f | Wired connection 1

GENERAL.DEVICE:                         wlp2s0
GENERAL.TYPE:                           wifi
GENERAL.NM-TYPE:                        NMDeviceWifi
GENERAL.VENDOR:                         Qualcomm Atheros
GENERAL.PRODUCT:                        AR9485 Wireless Network Adapter
GENERAL.DRIVER:                         ath9k
GENERAL.DRIVER-VERSION:                 5.3.0-28-generic
GENERAL.FIRMWARE-VERSION:               N/A
GENERAL.HWADDR:                         <MAC 'wlp2s0' [IF2]>
GENERAL.MTU:                            1500
GENERAL.STATE:                          20 (unavailable)
GENERAL.REASON:                         2 (Device is now managed)
GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:1c.0/0000:02:00.0/net/wlp2s0
GENERAL.IP-IFACE:                       --
GENERAL.IS-SOFTWARE:                    no
GENERAL.NM-MANAGED:                     yes
GENERAL.AUTOCONNECT:                    yes
GENERAL.FIRMWARE-MISSING:               no
GENERAL.NM-PLUGIN-MISSING:              no
GENERAL.PHYS-PORT-ID:                   --
GENERAL.CONNECTION:                     --
GENERAL.CON-UUID:                       --
GENERAL.CON-PATH:                       --
GENERAL.METERED:                        unknown
CAPABILITIES.CARRIER-DETECT:            no
CAPABILITIES.SPEED:                     unknown
CAPABILITIES.IS-SOFTWARE:               no
CAPABILITIES.SRIOV:                     no
WIFI-PROPERTIES.WEP:                    yes
WIFI-PROPERTIES.WPA:                    yes
WIFI-PROPERTIES.WPA2:                   yes
WIFI-PROPERTIES.TKIP:                   yes
WIFI-PROPERTIES.CCMP:                   yes
WIFI-PROPERTIES.AP:                     yes
WIFI-PROPERTIES.ADHOC:                  yes
WIFI-PROPERTIES.2GHZ:                   yes
WIFI-PROPERTIES.5GHZ:                   no
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: --

SSID  BSSID  MODE  CHAN  FREQ  RATE  SIGNAL  BARS  SECURITY  ACTIVE  IN-USE

##### NetworkManager.state ##############

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true

##### NetworkManager config #############

[[/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf]]
[connection]
wifi.powersave = 3

[[/etc/NetworkManager/NetworkManager.conf]]
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no

[[/usr/lib/NetworkManager/conf.d/10-dns-resolved.conf]]
[main]
dns=systemd-resolved

[[/usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf]]
[keyfile]
unmanaged-devices=*,except:type:wifi,except:type:wwan

[[/usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf]]
[connectivity]
uri=http://connectivity-check.ubuntu.com/

[[/usr/lib/NetworkManager/conf.d/no-mac-addr-change.conf]]
[device-mac-addr-change-wifi]
match-device=driver:rtl8723bs,driver:rtl8189es,driver:r8188eu,driver:8188eu,driver:eagle_sdio,driver:wl
wifi.scan-rand-mac-address=no
wifi.cloned-mac-address=preserve
ethernet.cloned-mac-address=preserve

##### NetworkManager profiles ###########

[[/etc/NetworkManager/system-connections/Super-Fi]] (600 root)
[connection] id=Super-Fi | type=wifi | permissions=
[wifi] mac-address=<MAC 'wlp2s0' [IF2]> | mac-address-blacklist= | ssid=Super-Fi
[ipv4] method=auto
[ipv6] method=auto

[[/etc/NetworkManager/system-connections/Super-Fi 1]] (600 root)
[connection] id=Super-Fi 1 | type=wifi | permissions=
[wifi] mac-address=<MAC 'wlp2s0' [IF2]> | mac-address-blacklist= | ssid=Super-Fi
[ipv4] method=auto
[ipv6] method=auto

##### Netplan config ####################

[/etc/netplan/01-network-manager-all.yaml]
network:
  version: 2
  renderer: NetworkManager

##### iw reg get ########################

Region: Europe/Rome (based on set time zone)

global
country 00: DFS-UNSET
    (2402 - 2472 @ 40), (N/A, 20), (N/A)
    (2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
    (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
    (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
    (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
    (5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
    (5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
    (57240 - 63720 @ 2160), (N/A, 0), (N/A)

##### iwlist channels ###################

enp3s0    no frequency information.

lo        no frequency information.

wlp2s0    13 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Channel 12 : 2.467 GHz
          Channel 13 : 2.472 GHz

##### iwlist scan #######################

enp3s0    Interface doesn't support scanning.

wlp2s0    Interface doesn't support scanning : Network is down

lo        Interface doesn't support scanning.

##### module infos ######################

[ath3k]
filename:       /lib/modules/5.3.0-28-generic/kernel/drivers/bluetooth/ath3k.ko
firmware:       ath3k-1.fw
license:        GPL
version:        1.0
description:    Atheros AR30xx firmware driver
author:         Atheros Communications
srcversion:     76A3AF6F30098E6C760BCBB
depends:        bluetooth
retpoline:      Y
intree:         Y
name:           ath3k
vermagic:       5.3.0-28-generic SMP mod_unload
signat:         PKCS#7
signer:        
sig_key:        
sig_hashalgo:   md4

[ath9k]
filename:       /lib/modules/5.3.0-28-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k.ko
license:        Dual BSD/GPL
description:    Support for Atheros 802.11n wireless LAN cards.
author:         Atheros Communications
srcversion:     EF1E6B00DBFECEEC2C25BDC
depends:        mac80211,ath9k_hw,ath9k_common,cfg80211,ath
retpoline:      Y
intree:         Y
name:           ath9k
vermagic:       5.3.0-28-generic SMP mod_unload
signat:         PKCS#7
signer:        
sig_key:        
sig_hashalgo:   md4
parm:           debug:Debugging mask (uint)
parm:           nohwcrypt:Disable hardware encryption (int)
parm:           blink:Enable LED blink on activity (int)
parm:           led_active_high:Invert LED polarity (int)
parm:           btcoex_enable:Enable wifi-BT coexistence (int)
parm:           bt_ant_diversity:Enable WLAN/BT RX antenna diversity (int)
parm:           ps_enable:Enable WLAN PowerSave (int)
parm:           use_chanctx:Enable channel context for concurrency (int)
parm:           use_msi:Use MSI instead of INTx if possible (int)

[ath9k_common]
filename:       /lib/modules/5.3.0-28-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_common.ko
license:        Dual BSD/GPL
description:    Shared library for Atheros wireless 802.11n LAN cards.
author:         Atheros Communications
srcversion:     923CE24A2D339F2FC6DD39F
depends:        ath9k_hw,cfg80211,ath
retpoline:      Y
intree:         Y
name:           ath9k_common
vermagic:       5.3.0-28-generic SMP mod_unload
signat:         PKCS#7
signer:        
sig_key:        
sig_hashalgo:   md4

[ath9k_hw]
filename:       /lib/modules/5.3.0-28-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_hw.ko
license:        Dual BSD/GPL
description:    Support for Atheros 802.11n wireless LAN cards.
author:         Atheros Communications
srcversion:     8D2CD0DBA3F81518507202A
depends:        ath
retpoline:      Y
intree:         Y
name:           ath9k_hw
vermagic:       5.3.0-28-generic SMP mod_unload
signat:         PKCS#7
signer:        
sig_key:        
sig_hashalgo:   md4

[ath]
filename:       /lib/modules/5.3.0-28-generic/kernel/drivers/net/wireless/ath/ath.ko
license:        Dual BSD/GPL
description:    Shared library for Atheros wireless LAN cards.
author:         Atheros Communications
srcversion:     DDC1D7EDF68EB04D2B8EE13
depends:        cfg80211
retpoline:      Y
intree:         Y
name:           ath
vermagic:       5.3.0-28-generic SMP mod_unload
signat:         PKCS#7
signer:        
sig_key:        
sig_hashalgo:   md4

[mac80211]
filename:       /lib/modules/5.3.0-28-generic/kernel/net/mac80211/mac80211.ko
license:        GPL
description:    IEEE 802.11 subsystem
srcversion:     6E0E397891117C00B7DB9BA
depends:        cfg80211,libarc4
retpoline:      Y
intree:         Y
name:           mac80211
vermagic:       5.3.0-28-generic SMP mod_unload
signat:         PKCS#7
signer:        
sig_key:        
sig_hashalgo:   md4
parm:           minstrel_vht_only:Use only VHT rates when VHT is supported by sta. (bool)
parm:           max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
parm:           max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
parm:           beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
parm:           probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
parm:           ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)

[cfg80211]
filename:       /lib/modules/5.3.0-28-generic/kernel/net/wireless/cfg80211.ko
description:    wireless configuration support
license:        GPL
author:         Johannes Berg
srcversion:     7A4BDDDDFBDE4DDDB63AAE3
depends:        
retpoline:      Y
intree:         Y
name:           cfg80211
vermagic:       5.3.0-28-generic SMP mod_unload
signat:         PKCS#7
signer:        
sig_key:        
sig_hashalgo:   md4
parm:           bss_entries_limit:limit to number of scan BSS entries (per wiphy, default 1000) (int)
parm:           ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm:           cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)

##### module parameters #################

[ath9k]
blink: 0
bt_ant_diversity: 0
btcoex_enable: 0
led_active_high: -1
nohwcrypt: 0
ps_enable: 0
use_chanctx: 0
use_msi: 0

[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
minstrel_vht_only: Y
probe_wait_ms: 500

[cfg80211]
bss_entries_limit: 1000
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00

##### /etc/modules ######################

##### modprobe options ##################

[/etc/modprobe.d/amd64-microcode-blacklist.conf]
blacklist microcode

[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci

[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac

[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off

[/etc/modprobe.d/intel-microcode-blacklist.conf]
blacklist microcode

[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211

##### rc.local ##########################

grep: /etc/rc.local: No such file or directory

##### pm-utils ##########################

##### udev rules ########################

##### dmesg #############################

[   23.519982] ath9k 0000:02:00.0 wlp2s0: renamed from wlan0
[   47.568598] r8169 0000:03:00.0 enp3s0: Link is Down
[   49.077991] r8169 0000:03:00.0 enp3s0: Link is Up - 100Mbps/Full - flow control off
[   49.078017] IPv6: ADDRCONF(NETDEV_CHANGE): enp3s0: link becomes ready

########## wireless info END ############

Issue #3: When I suspend the laptop, either by closing the lid or clicking suspend, it does not turn back on. The power ligth stops blinking but the screen stays black.

Any ideas?

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