# July 09, 2013: replacement of an ECS AMD690VM-FMH motherboard by an ASRock N68C-GS FX one

Everything is OK, except the CPU fan at maximum speed all the time. It has been solved by enabling “CPU fan control” in the BIOS, and setting a suitable mid-value speed for the fan (5 in a range of 1 to 9).
In KDE (during the boot procedure of KDE!), I get messy (garbled) graphics. Once it is garbled, it is necessary to push the power button several seconds to force the computer to stop. Installing the package nvidia-current solved the problem: indeed the integrated graphic chipset is an NVIDIA GeForce 7025 (nForce 630a).
Note 1: sometimes I do not get the Grub menu at boot time, for some reason. However, after pressing CTRL+ALT+DEL, it appeared at each try I made.
Note 2: at some time, I tried to add the line “blacklist: nouveau” in /etc/modprobe.d/blacklist.conf, before installing the nvidia driver. I don’t know if it is the reason, but after a reboot I obtained a busybox shell with the string “initramfs” at prompt; even with the failsafe version of Linux available in Grub where I should obtain the traditional “curses” failsafe menu containing several options. I read on internet that it may be due to a faulty RAM. But a test with memtest86 (available in GRUB menu) yielded a good condition for the RAM. I decided to reinstall Kubuntu 13.04 to solve the problem. I don’t know if it was necessary.
Note 3: the integrated card reader (connected to a USB extension port of the motherboard) does not work with a 8GB SD card. However, it is readily found with “lsusb -v” (and not “lspci”):
Bus 001 Device 004: ID 07b8:e004 AboCom Systems Inc Mass Storage Device
Couldn’t open device, some information will be missing
Device Descriptor:
bLength                18
bDescriptorType         1
bcdUSB               2.00
bDeviceClass            0 (Defined at Interface level)
bDeviceSubClass         0
bDeviceProtocol         0
bMaxPacketSize0        64
idVendor           0x07b8 AboCom Systems Inc
idProduct          0xe004 Mass Storage Device
bcdDevice            1.20
iManufacturer           1
iProduct                2
iSerial                 3
bNumConfigurations      1
Configuration Descriptor:
bLength                 9
bDescriptorType         2
wTotalLength           32
bNumInterfaces          1
bConfigurationValue     1
iConfiguration          4
bmAttributes         0x80
(Bus Powered)
MaxPower              500mA
Interface Descriptor:
bLength                 9
bDescriptorType         4
bInterfaceNumber        0
bAlternateSetting       0
bNumEndpoints           2
bInterfaceClass         8 Mass Storage
bInterfaceSubClass      6 SCSI
bInterfaceProtocol     80 Bulk-Only
iInterface              5
Endpoint Descriptor:
bLength                 7
bDescriptorType         5
bmAttributes            2
Transfer Type            Bulk
Synch Type               None
Usage Type               Data
wMaxPacketSize     0x0200  1x 512 bytes
bInterval               0
Endpoint Descriptor:
bLength                 7
bDescriptorType         5