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#1 2017-09-29 23:03:22

jennydaman
Member
Registered: 2017-04-04
Posts: 15

X.Org CPU/tasks stall on Acer Aspire VX5-591G

Arch Linux runs OK (with some issues*) with GNOME 3.24 on Wayland, 4.13.3-1-zen kernel. I'm not using the Nvidia GPU, just Intel integrated graphics. Though I'd like to switch up my desktop environment (Deepin and Budgie 10.4 seem pretty cool). Ideally, I'd like to have all three DEs installed side by side along with GDM, though any instance of X.org on my machine causes issues.

I decided to do some debugging with XFCE4. Starting a session from GDM would take an unusually long time, ~1 minute. Logging out also caused the system to freeze for about the same time. Same issue with LightDM. I deactivated GDM so that perhaps I can get some debug messages in the TTY.

Nothing out of the ordinary with my configurations for X, I never touched anything. Below is some relevant output from

cat Xorg.0.log | grep "WW\|EE"

:

[    14.829] (WW) The directory "/usr/share/fonts/Type1/" does not exist.
[    14.833] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
[    14.836] (WW) Warning, couldn't open module nouveau
[    14.836] (EE) Failed to load module "nouveau" (module does not exist, 0)
[    14.837] (WW) Warning, couldn't open module nv
[    14.837] (EE) Failed to load module "nv" (module does not exist, 0)
[    14.838] (WW) Warning, couldn't open module fbdev
[    14.838] (EE) Failed to load module "fbdev" (module does not exist, 0)
[    14.838] (WW) Warning, couldn't open module vesa
[    14.838] (EE) Failed to load module "vesa" (module does not exist, 0)
[    14.839] (WW) Falling back to old probe method for modesetting
[    14.839] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
[    33.155] (EE) modeset(G0): glamor initialization failed
[   556.649] (WW) xf86CloseConsole: KDSETMODE failed: Input/output error
[   556.649] (WW) xf86CloseConsole: VT_GETMODE failed: Input/output error
[   556.649] (WW) xf86CloseConsole: VT_ACTIVATE failed: Input/output error

Installing the missing modules didn't fix anything either.

Things get weirder. After XFCE shows up, I log out, and the framebuffer forgets how to determine the length of line breaks.... on every line break, there are too many spaces that overflow onto the next line (see top half of next picture). After having logged out, I try startxfce4 again, and this time the system froze for 5 minutes. It responded to nothing until I pressed the power button out of impatience, which killed the xinit process and started the shutdown procedures. It took a long time for the daemons to stop.

IMG_20170926_161834.jpg
IMG_20170926_162420.jpg

After 20 minutes, systemd stopped reporting the termination of daemons, but instead the tty was flooded with these messages:

IMG_20170926_164740.jpg

INFO: rcu_preempt detected stalls on CPUs/tasks:

Does anyone else have this problem? Is there a way to fix it, or is this a bug? If so, what should I do about that? (where & how to report, maybe add a wiki page to https://wiki.archlinux.org/index.php/Laptop/Acer)

Oh yeah probably unrelated but GDM blacks out for a brief moment everytime about 2 seconds after it starts. This laptop is just terrible (for Linux).

Last edited by jennydaman (2017-09-29 23:09:56)

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#2 2018-02-02 02:31:08

snot
Member
Registered: 2018-02-02
Posts: 1

Re: X.Org CPU/tasks stall on Acer Aspire VX5-591G

I had this problem too and couldn`t find an answer, so I`ll reply here.

This problem is being caused by nouveau driver, so you need to install nvidia proprietary driver.
To have everything working properly you also have to install the Intel driver and bumblebee, or you will face a black screen once you start X.

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#3 2018-02-06 17:14:34

jennydaman
Member
Registered: 2017-04-04
Posts: 15

Re: X.Org CPU/tasks stall on Acer Aspire VX5-591G

I don't have time this month to mess around, though I'll play around with it in the future.

This issue persists with Intel graphics, however...

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