Arch Linux

svenio

Member

Registered: 2015-08-22

Posts: 1

Video & Touchpad on Acer V3-572

While a long-time user of Linux I'm still semi-n00b on Arch.  I've been using Arch pretty much hassle free for over a year now but the other day I succumbed to a good back-to-school sale and replaced my old laptop with a new Acer V3-572.  So far most things work out of the box such as audio, NIC, touchscreen, etc. but I'm having troubles with my graphics and touchpad.

WiFi (as an aside, for other users)
Built-in kernel support for Broadcom BCM43228 exists only in 3.17+ versions so I'm running the latest 4.1.  After that I installed the b43-firmware, rebooted and things worked perfectly.  It's took me all day and 4 re-installations to figure this out, but in the end I just had to find the right documentation. 

Kernel driver information: https://wireless.wiki.kernel.org/en/use … f_hardware
Firmware:  https://aur.archlinux.org/packages/b43-firmware

TouchPad
Basic functionality only.  I haven't done any work on this but it would be nice to have full multi-touch.  I have no idea where to start so if someone could direct me to the right documentation, I'd be grateful. From dmesg:

[    2.750970] i2c_hid i2c-SYN1B7E:01: failed to retrieve report from device.
[    2.752108] acer_wmi: Enabling Launch Manager failed: 0xe4 - 0x0
[    2.752177] input: Acer WMI hotkeys as /devices/virtual/input/input14
[    2.754111] input: Acer BMA150 accelerometer as /devices/virtual/input/input15
[    2.754668] r8169 0000:02:00.1 enp2s0f1: renamed from eth0
[    2.754797] fbcon: inteldrmfb (fb0) is primary device
[    2.773304] i2c_hid i2c-SYN1B7E:01: failed to retrieve report from device.
[    2.773680] input: SYN1B7E:01 06CB:2970 UNKNOWN as /devices/pci0000:00/INT3433:00/i2c-1/i2c-SYN1B7E:01/0018:06CB:2970.0004/input/input16
[    2.775219] iTCO_vendor_support: vendor-support=0
[    2.776064] hid-multitouch 0018:06CB:2970.0004: input,hidraw3: <UNKNOWN> HID v1.00 Mouse [SYN1B7E:01 06CB:2970] on 
[    2.776518] intel_rapl: Found RAPL domain package
[    2.776519] intel_rapl: Found RAPL domain core
[    2.776520] intel_rapl: Found RAPL domain uncore
[    2.776901] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
[    2.777276] iTCO_wdt: Found a Wildcat Point_LP TCO device (Version=2, TCOBASE=0x1860)
[    2.777404] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[    2.810315] mousedev: PS/2 mouse device common for all mice

Video
Currently running Nouveau but it's slow and sometimes gives me the same BSOD these guys experienced.  I'm willing to put up with it for now, but I'd like the power of the GeForce card for gaming if possible.  The laptop has the following graphics cards:

> lspci -k

00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)
	Subsystem: Acer Incorporated [ALI] Device 0940
	Kernel driver in use: i915
	Kernel modules: i915
04:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 840M] (rev a2)
	Subsystem: Acer Incorporated [ALI] Device 0942
	Kernel modules: nouveau

This causes me to think I'm running Optimus, but when I follow the PRIME guide I only get one provider...

> xrander --listproviders
Provider 0: id: 0x46 cap: 0x2, Sink Output crtcs: 3 outputs: 4 associated providers: 0 name:modesetting

which isn't too big of a deal because the troubleshooting section addresses this.  Unfortunately it didn't help much because I apparently don't have an xorg.conf!?

> ls etc/X11/
xinit  xorg.conf.d

and

> ls /etc/X11/xorg.conf.d/
00-keyboard.conf

I'm kind of at a loss here.  I know support for Optimus is still in development, but am I really running Optimus if I've only got one provider?  It would appear as I'm currently only using the IGP...

> glxinfo | grep "OpenGL renderer"
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 5500 (Broadwell GT2)

Since there's no way in BIOS for me to choose the discrete graphics over the IGP, how to I get Optimus to work?