Arch Linux

ikidd

Member

Registered: 2018-01-15

Posts: 27

Upgrade to 4.20 leads to complete hang on boot

I ran the upgrade for linux-4.20.arch1-1-x86_64 (and headers) and on reboot it gets just past the loading systemd verbage and then hangs completely, no response from capslock or ability to change TTY.  Chroot in and downgrade to 4.19.12 and boots fine.

journalctl shows kernel messages for "Hardware Error" and then just cycles around repeating that indefinitely, probably the source of the locked boot as it spins its wheels.

Journal output here (i truncated the extra 10k lines of the same thing):  https://gist.github.com/ikidd/4b104a6b1 … b953e38523
Error shows up at about line 1270

Dell 5575 laptop with Ryzen 5 2500U cpu, installed on NVME drive.

loqs

Member

Registered: 2014-03-06

Posts: 17,315

Re: Upgrade to 4.20 leads to complete hang on boot

I would suggest ensuring you have backups.  Installing linux-lts as an alternative to linux to avoid having to keep downgrading.
Testing linux 4.20 booting to multi-user.target instead of graphical.target as the issue seems to start shortly after SDDM has started X.

ikidd

Member

Registered: 2018-01-15

Posts: 27

Re: Upgrade to 4.20 leads to complete hang on boot

Starting in multiuser gets me to a prompt.  I pulled up the logs again and see it throwing errors over the Vega Mobile gpu and the PCI Bridge when I investigate the vendor IDs via lspci -nn

And yes, starting SDDM piles it up.  Tried Lightdm with gtk greeter and it also piles up very shortly after loading dm with AMDGPU errors.

https://gist.github.com/ikidd/692dea4c6 … 322d066405

Line 978 of journal shows error on boot via vendor ID, and I've included the outputs of lspci grepping for them.

sammiev

Member

Registered: 2018-12-22

Posts: 84

Re: Upgrade to 4.20 leads to complete hang on boot

Tried most DM but GDM, other than that I'm in the same boat as you with 4.20.
The same piles up.
Watching closely.

ikidd

Member

Registered: 2018-01-15

Posts: 27

Re: Upgrade to 4.20 leads to complete hang on boot

What's your hardware, sammiev?  I'm seeing other threads elsewhere that indicate it's an integrated AMD gpu issue.

loqs

Member

Registered: 2014-03-06

Posts: 17,315

Re: Upgrade to 4.20 leads to complete hang on boot

If you blacklist the amdgpu module on the kernel command line leaving the system with probably just a vesa console are the errors still produced?

sammiev

Member

Registered: 2018-12-22

Posts: 84

Re: Upgrade to 4.20 leads to complete hang on boot

What's your hardware, sammiev?  I'm seeing other threads elsewhere that indicate it's an integrated AMD gpu issue.

System:    Host: arch Kernel: 4.14.90-1-lts x86_64 bits: 64 compiler: gcc v: 8.2.1 Desktop: Xfce 4.12.4 Distro: Arch Linux 
Machine:   Type: Laptop System: TOSHIBA product: Satellite L650 v: PSK1E1-1234567 serial: <root required> 
           Mobo: TOSHIBA model: Portable PC serial: <root required> BIOS: INSYDE v: 2.40 date: 11/09/2011 
Battery:   ID-1: BAT0 charge: 35.8 Wh condition: 35.8/47.5 Wh (75%) model: PA381 status: Unknown 
CPU:       Topology: Dual Core model: Intel Core i5 M 480 bits: 64 type: MT MCP arch: Nehalem rev: 5 L2 cache: 3072 KiB 
           flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 21331 
           Speed: 1467 MHz min/max: 1199/2667 MHz Core speeds (MHz): 1: 1467 2: 1466 3: 1467 4: 1466 
Graphics:  Device-1: Intel Core Processor Integrated Graphics vendor: Toshiba America Info Systems driver: i915 v: kernel 
           bus ID: 00:02.0 
           Display: x11 server: X.Org 1.20.3 driver: modesetting unloaded: vesa resolution: 1366x768~60Hz 
           OpenGL: renderer: Mesa DRI Intel Ironlake Mobile v: 2.1 Mesa 18.3.1 direct render: Yes 
Audio:     Device-1: Intel 5 Series/3400 Series High Definition Audio vendor: Toshiba America Info Systems 
           driver: snd_hda_intel v: kernel bus ID: 00:1b.0 
           Sound Server: ALSA v: k4.14.90-1-lts 
Network:   Device-1: Qualcomm Atheros AR8152 v1.1 Fast Ethernet vendor: Toshiba America Info Systems driver: atl1c 
           v: 1.0.1.1-NAPI port: 3000 bus ID: 01:00.0 
           IF: enp1s0 state: up speed: 100 Mbps duplex: full mac: 00:26:6c:98:5a:36 
           Device-2: Realtek RTL8188CE 802.11b/g/n WiFi Adapter driver: rtl8192ce v: kernel port: 2000 bus ID: 02:00.0 
           IF: wlp2s0 state: down mac: ea:d4:3a:6c:de:ca 
           IF-ID-1: tun0 state: unknown speed: 10 Mbps duplex: full mac: N/A 
Drives:    Local Storage: total: 232.89 GiB used: 7.56 GiB (3.2%) 
           ID-1: /dev/sda vendor: Samsung model: SSD 860 EVO 250GB size: 232.89 GiB 
Partition: ID-1: / size: 71.77 GiB used: 7.47 GiB (10.4%) fs: ext4 dev: /dev/sda2 
           ID-2: /boot size: 1.91 GiB used: 96.0 MiB (4.9%) fs: ext4 dev: /dev/sda1 
           ID-3: swap-1 size: 4.00 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda6 
Sensors:   System Temperatures: cpu: 54.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Info:      Processes: 150 Uptime: 47m Memory: 7.60 GiB used: 1.20 GiB (15.8%) Init: systemd Compilers: gcc: 8.2.1 Shell: bash 
           v: 4.4.23 inxi: 3.0.29 

seth

Member

Registered: 2012-09-03

Posts: 50,970

Re: Upgrade to 4.20 leads to complete hang on boot

@ikidd, since the errors seem to occur for X11, do you use https://www.archlinux.org/packages/extr … eo-amdgpu/ and what if you toggle between it and the modesetting ddx driver? (Ie. install or uninstall it)

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ikidd

Member

Registered: 2018-01-15

Posts: 27

Re: Upgrade to 4.20 leads to complete hang on boot

If you blacklist the amdgpu module on the kernel command line leaving the system with probably just a vesa console are the errors still produced?

@loqs: Indeed, that's what happens when adding modprobe.blacklist=amdgpu

Defaults to kms and doesn't log the hardware errors.  Doesn't do anything useful but I can get to a TTY.

I'm guessing this is bug-reporting territory at this point?

ikidd

Member

Registered: 2018-01-15

Posts: 27

Re: Upgrade to 4.20 leads to complete hang on boot

@seth: installing or uninstalling xf86-video-amdgpu has no effect, still hard hang unless I blacklist amdgpu

loqs

Member

Registered: 2014-03-06

Posts: 17,315

Re: Upgrade to 4.20 leads to complete hang on boot

Yes if you can not find an already opened report here  file it under product DRI component DRM/AMDgpu.

ikidd

Member

Registered: 2018-01-15

Posts: 27

Re: Upgrade to 4.20 leads to complete hang on boot

Will do, thanks.

Looks like https://bugzilla.freedesktop.org/show_bug.cgi?id=108992, not sure how I missed this one, as I had looked, but maybe I hadn't narrowed down that far.

iommu=soft seems to allow boot on 4.20 but like the other reporter, I'm not exactly sure what that impacts.  I don't do any VFIO or VM on this system.

Last edited by ikidd (2019-01-01 20:24:17)