Arch Linux

MelvIsntNormal

Member

Registered: 2018-04-22

Posts: 12

HDMI has stopped working (no signal)

Yesterday, my HDMI monitor for my laptop was working fine. I shut down the laptop, turned it back on later and installed Mixxx (without the external monitor), then turned it off again.

The next morning, I turn on my laptop with my monitor plugged in, and nothing shows up. The monitor doesn't detect any signals. My VGA monitor works just fine. I uninstall Mixxx, no dice. I do a system update, still not working.

I don't think I've installed anything that would give me this issue. I certainly haven't done anything to do with my displays. I tried my laptop with a different HDMI cable, a different monitor all together, and tried the suspect monitor with a different laptop, which worked. So the issue isn't the monitor or the cables. I'm really hoping it's not a hardware issue.

I'm running Arch on a HP G4 250 with an i5-6200U and HD Graphics 520.

lspci -k:

00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers (rev 08)
	Subsystem: Hewlett-Packard Company Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers
	Kernel driver in use: skl_uncore
00:02.0 VGA compatible controller: Intel Corporation Skylake GT2 [HD Graphics 520] (rev 07)
	Subsystem: Hewlett-Packard Company Skylake GT2 [HD Graphics 520]
	Kernel driver in use: i915
	Kernel modules: i915
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 08)
	Subsystem: Hewlett-Packard Company Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem
	Kernel driver in use: proc_thermal
	Kernel modules: processor_thermal_device
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
	Subsystem: Hewlett-Packard Company Sunrise Point-LP USB 3.0 xHCI Controller
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci_pci
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
	Subsystem: Hewlett-Packard Company Sunrise Point-LP Thermal subsystem
	Kernel driver in use: intel_pch_thermal
	Kernel modules: intel_pch_thermal
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
	Subsystem: Hewlett-Packard Company Sunrise Point-LP CSME HECI
	Kernel driver in use: mei_me
	Kernel modules: mei_me
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
	Subsystem: Hewlett-Packard Company Sunrise Point-LP SATA Controller [AHCI mode]
	Kernel driver in use: ahci
	Kernel modules: ahci
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
	Kernel driver in use: pcieport
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
	Kernel driver in use: pcieport
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
	Subsystem: Hewlett-Packard Company Sunrise Point-LP LPC Controller
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
	Subsystem: Hewlett-Packard Company Sunrise Point-LP PMC
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
	Subsystem: Hewlett-Packard Company Sunrise Point-LP HD Audio
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel, snd_soc_skl
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
	Subsystem: Hewlett-Packard Company Sunrise Point-LP SMBus
	Kernel driver in use: i801_smbus
	Kernel modules: i2c_i801
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
	Subsystem: Hewlett-Packard Company RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
	Kernel driver in use: r8168
	Kernel modules: r8169, r8168
02:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59)
	Subsystem: Intel Corporation Dual Band Wireless-AC 7265
	Kernel driver in use: iwlwifi
	Kernel modules: iwlwifi

Nothing shows up on dmesg when I plug the cable in, and I'm using Wayland so I don't have xrandr.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,237

Re: HDMI has stopped working (no signal)

A xorg.log and a dmesg after a few plug-in/-out attempts would be interesting

MelvIsntNormal

Member

Registered: 2018-04-22

Posts: 12

Re: HDMI has stopped working (no signal)

When I tried plugging in the monitor a few times, nothing showed up on dmesg. So I shut down my laptop so I could start it up again and get a fresh log after lunch. I came back, turned it on and the monitor seems to be working again. I have no idea why.

This isn't really solved, but I can't seem to reproduce the issue anymore... I'll check back with the logs if it happens again