Acer Aspire 7720G

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This article is part of the Hardware series.
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Contents

[edit] Hardware

  • CPU: Intel Core 2 Duo Processor T5250 @ 1500 MHz, 667 MHz FSB, 2 MB L2 Cache (amd64)
  • RAM: 2048 MB (2 x 1024 DDR2-SDRAM)
  • CHIPSET:  ??
  • VIDEO: NVIDIA GeForce 8400 GS TurboCache
  • AUDIO: Intel High Definition Audio (Realtek ALC268 codec + built in microphone)
  • USB:
    • Intel 82801H (ICH8 Family) USB UHCI (x4)I
    • Intel USB2 EHCI
  • DISKS:
    • Intel (ICH8 Chipset) SATA AHCI Controller
    • ST9160821AS (160 GB) HDD
    • HL-DT-ST DVDRAM GSA-T20N ATA Device (DVD-Super Multi double layer)
  • WIRELESS: Intel PRO/Wireless 3945ABG Wireless Card
  • NETWORK:
    • Broadcom NetLink BCM5787M Gigabit Ethernet
    • Winmodem (?)
  • MISC:
    • Ricoh Firewire R5C832
    • Ricoh MMC/SD adapter R5C822
    • Suyin Corp USB webcam (USB bus --> Acer CrystalEye)
    • Bluetooth (No)
    • PS/2 Trackpad (Alps Pointing-device)
    • SD/SDIO/MMC/MS/MSPro : Ricoh Co Ltd R5C822
    • FireWire (IEEE 1394): Ricoh Co Ltd R5C832
Code: lspci 
00:00.0 Host bridge: Intel Corporation Mobile Memory Controller Hub (rev 03)
00:01.0 PCI bridge: Intel Corporation Mobile PCI Express Root Port (rev 03)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Contoller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation Mobile LPC Interface Controller (rev 03)
00:1f.1 IDE interface: Intel Corporation Mobile IDE Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation Mobile SATA AHCI Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03)
01:00.0 VGA compatible controller: nVidia Corporation Unknown device 0427 (rev a1)
05:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5787M Gigabit Ethernet PCI Express (rev 02)
06:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)
07:00.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
07:00.1 Generic system peripheral [0805]: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
07:00.2 System peripheral: Ricoh Co Ltd Unknown device 0843 (rev 12)
07:00.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
07:00.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 12)

It is also useful to have a look at acer-acpi kernel module for specific support to keyboard keys such as bluetooth, wireless and mail. This module also supports changing the screen brightness, it is very well documented. (link)

[edit] make.conf

For CFLAGS, see the CPU section.

File: /etc/make.conf 
INPUT_DEVICES="keyboard mouse synaptics evdev"
VIDEO_CARDS="nvidia v4l vesa"
ALSA_CARDS="hda-intel"

[edit] CPU

See this HowTo.

[edit] kernel & Audio system

I've succeded in activating sound by using a patched kernel : linux-2.6.23-kamikaze4 that includes a patch for ALC268 model=acer Intel HDA cards. You won't be able in making it work with the linux-2.6.23-gentoo-r3 kernel because the hda-intel module with ALC268 model=acer is not yet included in alsa headers. Sound won't work neither with =alsa-driver-1.0.15 first releases (same reason) We can wait next releases of this kernel or wait for alsa-driver to include this patch in the mercurial or the official release.

but we can also try kamikaze kernel : With this kernel, headphone jack works perfectly, but inside subwoofer doesn't work very well : I can't retrieve any bass. That's why I let my headphones plugged till I find a better way.

Internal and External microphone does not work yet. But the intel hda driver is still in development.

[edit] working

alsa-driver >= 1.0.15 or kernel >= 2.6.24

Run: 

# echo "options snd_hda_intel model=acer" >> /etc/modprobe.d/alsa

Afterwards run update-modules, then rmmod snd_hda_intel && modprobe snd_hda_intel.

[edit] Wifi

See this guide.

[edit] Webcam

Code: lsusb | grep Suyin 
Bus 002 Device 003: ID 064e:a101 Suyin Corp.

See this guide.

[edit] Keyboard / Multimedia Keys under X11

There is a package to add Fn keys for Acer notebooks (I have not tried it yet) 

emerge app-laptop/acerhk

This package has been masked in portage.

[edit] Compiz-Fusion

Latest Portage Snapshot exhibits some stability issues in Xorg 7.3. Maximize/Minimize if on the WUXGA Screen can be delayed by upto 10 seconds. Performance also in general from the 8x00m series Nvidia cards is also quite poor.

[edit] SD/MMC Card Reader

Linux Kernel Configuration: Enable SD Card Reader 
 Device Drivers  --->
   <*> MMC/SD card support
     [ ]   MMC debugging
     [ ]   Allow unsafe resume (DANGEROUS)
     ---   MMC/SD Card Drivers
     <*>   MMC block device driver
     [*]     Use bounce buffer for simple hosts
     ---   MMC/SD Host Controller Drivers
     <*>   Secure Digital Host Controller Interface support  (EXPERIMENTAL)
     <*>   Winbond W83L51xD SD/MMC Card Interface support
     <*>   TI Flash Media MMC/SD Interface support  (EXPERIMENTAL)
Note: I have a slight issue where I have to insert, remove, and then insert the memory card again for it to be mounted (Gnome Automounter). Kernel logs show it is detected first time round, but never mounted until second time. This may just be an issue with automount.

[edit] Remaining Tests

  • Red Infrared port not tested yet
  • Overheating issues.
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