Black screen for a second and then goes back to normal

Hi, I’m having the following problem with a fresh installation of Manjaro. I’m on the stable branch: the screen goes black for a second and then everything comes back to normal.

Here goes my inxi output:

System:    Host: eugenio-ms7b24 Kernel: 5.13.19-2-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0
           parameters: BOOT_IMAGE=/boot/vmlinuz-5.13-x86_64 root=UUID=c9264b49-ece8-40ad-9fa1-27c39535ceb6 rw
           quiet apparmor=1 security=apparmor udev.log_priority=3
           Desktop: KDE Plasma 5.22.5 tk: Qt 5.15.2 wm: kwin_x11 vt: 1 dm: SDDM Distro: Manjaro Linux
           base: Arch Linux
Machine:   Type: Desktop Mobo
Memory:    RAM: total: 7.71 GiB used: 1.76 GiB (22.8%)
           RAM Report: permissions: Unable to run dmidecode. Root privileges required.
PCI Slots: Permissions: Unable to run dmidecode. Root privileges required.
CPU:       Info: 6-Core model: Intel Core i5-8400 bits: 64 type: MCP arch: Kaby Lake note: check family: 6
           model-id: 9E (158) stepping: A (10) microcode: EA cache: L2: 9 MiB bogomips: 33613
           Speed: 800 MHz min/max: 800/4000 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 800 5: 800 6: 800
           Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat arch_perfmon art avx avx2 bmi1 bmi2 bts
           clflush clflushopt cmov constant_tsc cpuid cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts ept
           ept_ad erms est f16c flexpriority flush_l1d fma fpu fsgsbase fxsr ht hwp hwp_act_window hwp_epp
           hwp_notify ibpb ibrs ida intel_pt invpcid invpcid_single lahf_lm lm mca mce md_clear mmx monitor
           movbe mpx msr mtrr nonstop_tsc nopl nx pae pat pbe pcid pclmulqdq pdcm pdpe1gb pebs pge pln pni
           popcnt pse pse36 pti pts rdrand rdseed rdtscp rep_good sdbg sep smap smep ss ssbd sse sse2 sse4_1
           sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow tsc tsc_adjust tsc_deadline_timer vme vmx vnmi vpid
           x2apic xgetbv1 xsave xsavec xsaveopt xsaves xtopology xtpr
           Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled
           Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled
           Type: mds mitigation: Clear CPU buffers; SMT disabled
           Type: meltdown mitigation: PTI
           Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl and seccomp
           Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization
           Type: spectre_v2
           mitigation: Full generic retpoline, IBPB: conditional, IBRS_FW, STIBP: disabled, RSB filling
           Type: srbds mitigation: Microcode
           Type: tsx_async_abort status: Not affected
Graphics:  Device-1: AMD Baffin [Radeon RX 460/560D / Pro 450/455/460/555/555X/560/560X]
           vendor: Sapphire Limited driver: amdgpu v: kernel bus-ID: 01:00.0 chip-ID: 1002:67ef class-ID: 0300
           Display: x11 server: X.Org 1.20.13 compositor: kwin_x11 driver: loaded: amdgpu,ati
           unloaded: modesetting alternate: fbdev,vesa display-ID: :0 screens: 1
           Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2") s-diag: 582mm (22.9")
           Monitor-1: HDMI-A-0 res: 1920x1080 hz: 60 dpi: 94 size: 521x293mm (20.5x11.5") diag: 598mm (23.5")
           OpenGL: renderer: Radeon RX 560 Series (POLARIS11 DRM 3.41.0 5.13.19-2-MANJARO LLVM 12.0.1)
           v: 4.6 Mesa 21.2.3 direct render: Yes
Audio:     Device-1: Intel Cannon Lake PCH cAVS vendor: Micro-Star MSI driver: snd_hda_intel v: kernel
           alternate: snd_soc_skl,snd_sof_pci_intel_cnl bus-ID: 00:1f.3 chip-ID: 8086:a348 class-ID: 0403
           Device-2: AMD Baffin HDMI/DP Audio [Radeon RX 550 640SP / RX 560/560X] vendor: Sapphire Limited
           driver: snd_hda_intel v: kernel bus-ID: 01:00.1 chip-ID: 1002:aae0 class-ID: 0403
           Sound Server-1: ALSA v: k5.13.19-2-MANJARO running: yes
           Sound Server-2: JACK v: 1.9.19 running: no
           Sound Server-3: PulseAudio v: 15.0 running: yes
           Sound Server-4: PipeWire v: 0.3.38 running: yes

I hope someone can help me.

I see somewhat similar behaviour when I’m connecting my TV via HDMI, but this occurs only with this TV and only once per poweron (after 10 to 15 minutes or so) so it’s not something I could be bothered to investigate so far.

I wish that was my problem. I get a black screen randomly every now and then.

I had some hope someone was suffering from the same issue and could bring some help. Meanwhile, I’ll continue searching for more information on how to monitor the graphics.

I have similar problems but on Ubuntu with a super old Nvidia card.

I don’t think it’s related tho.

It could also be a hardware problem in your case: any loose cables, or maybe old video cables that occasionally loose connection and cause the problem?

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Hi Crissi,

Thanks for the advise. I’ve just changed the HDMI cable, though the same old cable with a different distro worked well. Anyway, if this works, I’ll be happy.

1 Like

Changing the HDMI cable was the solution.


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