If you recently upgraded your kernel to the 2.6.29 Debian package, you might have noticed some (e.g. graphics) drivers stopped working or are working slower. In my case, this was the radeon driver, which inexplicably seemed to cause lots of slowdowns in some applications and games. A quick look into dmesg revealed the reason:
[drm] Initialized radeon 1.29.0 20080528 on minor 0 agpgart-intel 0000:00:00.0: AGP 2.0 bridge agpgart-intel 0000:00:00.0: putting AGP V2 device into 4x mode pci 0000:01:00.0: putting AGP V2 device into 4x mode [drm] Setting GART location based on new memory map [drm] Loading R200 Microcode platform radeon_cp.0: firmware: requesting radeon/R200_cp.bin radeon_cp: Failed to load firmware "radeon/R200_cp.bin" [drm:radeon_do_init_cp] *ERROR* Failed to load firmware!
As noted in the changelog file, the radeon firmware R200_cp.bin has been removed from the kernel, and is now available in the separate firmware-linux Debian package. So the simple fix for this issues is:
$ apt-get install firmware-linux $ dpkg -L firmware-linux | grep R200_cp.bin /lib/firmware/radeon/R200_cp.bin
After restarting X, the dmesg output looks more sane again:
agpgart-intel 0000:00:00.0: AGP 2.0 bridge agpgart-intel 0000:00:00.0: putting AGP V2 device into 4x mode pci 0000:01:00.0: putting AGP V2 device into 4x mode [drm] Setting GART location based on new memory map [drm] Loading R200 Microcode platform radeon_cp.0: firmware: requesting radeon/R200_cp.bin [drm] writeback test succeeded in 2 usecs
I recently got my hands on a Lenovo IdeaPad S9e netbook for a short amount of time (I don't own it), so I did a few tests with Debian unstable (more or less Lenny right now) and a Linux 2.6.28 kernel on it, see results below.
The machine type is 4187-42G, and it features an Intel Atom N270 CPU (with HyperThreading) at 1.6 GHz, 1 GB of DDR2 RAM, an 80 GB SATA drive, an 8.9" WSVGA 1024x600 (glossy) screen, VGA port, LAN, wifi, bluetooth, 2xUSB, SD card slot, PCI ExpressCard slot, built-in microphone, and a webcam.
You can enter the BIOS by pressing F2, the boot menu by pressing F12 during boot. Booting from USB works fine on this netbook. There's a Splashtop installation on the netbook (called "Lenovo Quickstart" here) which you can disable in the BIOS.
There's no CD-ROM drive, so the simplest way is to use a USB thumb drive for installation. Here's how you can prepare one containing a Lenny installer (assuming your USB thumb drive is /dev/sda):
$ wget http://cdimage.debian.org/debian-cd/5.0.1/i386/iso-cd/debian-501-i386-netinst.iso $ wget http://ftp.nl.debian.org/debian/dists/lenny/main/installer-i386/current/images/hd-media/boot.img.gz $ gunzip boot.img.gz $ dd if=boot.img of=/dev/sda1 $ mount -t vfat /dev/sda1 /mnt $ cp debian-500-i386-netinst.iso /mnt $ umount /mnt
If the above USB thumb drive doesn't boot correctly (which it did not in my case: GRUB error 17) it's probably because of a messed-up MBR. This is how you can fix it:
$ apt-get install mbr $ install-mbr /dev/sda
Then insert the USB thumb drive in the Lenovo IdeaPad S9e, choose USB boot in the BIOS, and start the installer. Most of the process works as usual, the only small difference is that you might want to load the "parted" installer module in order to resize the Windows-partition on the disk (if you want to keep it) to make space for Linux. The second (fat32) partition seems to keep a restore image and/or the Splashtop stuff, not sure.
Works out of the box using the snd_hda_intel driver. The hardware is onboard audio in the southbridge (82801G / ICH7) and uses the Realtek ALC269 codec. If some programs don't have working audio, try modprobe snd-pcm-oss.
Untested so far.
Works out of the box using the bluetooth and btusb driver. The laptop's Bluetooth device is USB-attached internally and shows up in lsusb as:
$ lsusb Bus 003 Device 002: ID 0a5c:2150 Broadcom Corp. $ dmesg usb 3-2: Product: BCM2046 Bluetooth Device
After modprobe btusb you can use hcitool / hciconfig etc. as usual, and/or enable more related stuff with /etc/init.d/bluetooth start.
The lm-sensors script detects the lm75, eeprom, i2c-dev, and i2c_i801 modules. The following is the 'sensors' output:
$ sensors acpitz-virtual-0 Adapter: Virtual device temp1: +36.0 °C (crit = +95.0 °C)
The hard drive temperature can be viewed with:
$ hddtemp /dev/sda /dev/sda: FUJITSU MHZ2080BH G1: 44 °C
$ dmesg | grep -i hpet ACPI: HPET 3F6E1E41, 0038 (r1 INTEL CALISTGA 6040000 LOHR 5A) ACPI: HPET id: 0x8086a201 base: 0xfed00000 hpet clockevent registered HPET: 3 timers in total, 0 timers will be used for per-cpu timer hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 hpet0: 3 comparators, 64-bit 14.318180 MHz counter
You can check the wakeups-per-second with powertop.
Works out of the box. It seems to be attached via USB internally (usb-storage driver).
$ lsusb Bus 001 Device 004: ID 0bda:0158 Realtek Semiconductor Corp. Mass Stroage Device
Untested so far.
Works fine, see comments for "acpitool" output.
Works out of the box using the tg3 driver.
$ modprobe tg3 tg3.c:v3.94 (August 14, 2008) tg3 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 tg3 0000:02:00.0: setting latency timer to 64 eth0: Tigon3 [partno(BCM95906) rev c002 PHY(5906)] (PCI Express) 10/100Base-TX Ethernet 00:11:22:33:44:55 eth0: RXcsums LinkChgREG MIirq ASF WireSpeed TSOcap eth0: dma_rwctrl dma_mask[64-bit]
Works out of the box, both in X as well as in the console using gpm.
$ dmesg Synaptics Touchpad, model: 1, fw: 7.2, id: 0x1c0b1, caps: 0xd04731/0xa40000
I'm using the hibernate Debian package. You can explicitly force the usage of either method in /etc/hibernate/hibernate.conf by uncommenting the respective lines.
TryMethod disk.conf # TryMethod ram.conf
Suspend does not yet work out of the box, however, as the machine is unknown:
$ s2ram -n Machine unknown This machine can be identified by: sys_vendor = "LENOVO " sys_product = "418742G " sys_version = "Lenovo " bios_version = "14CN51WW " See http://suspend.sf.net/s2ram-support.html for details.
After a few test I found that s2ram -f -a 3 works fine (tested from console only so far). Now this needs to be integrated upstream and in the Debian package (I'll file a bug report). Update: Submitted bug #520848, and an email to the upstream mailing list.
There doesn't seem to be a mainline driver for the Broadcom BCM4312 wifi card in the laptop, yet:
$ lspci -nn 05:00.0 Network controller : Broadcom Corporation BCM4312 802.11b/g [14e4:4315] (rev 01)
Neither the b43 nor the b43legacy drivers work as of 2.6.28. For now, one of two possible options is to build a (partly non-free) driver provided by Broadcom from source (option 2 would be to use ndiswrapper, I guess, but that's untested):
$ wget http://people.debian.org/~adamm/kernel/linux-kbuild-2.6.28_2.6.28-0.1_i386.deb $ dpkg -i linux-kbuild-2.6.28_2.6.28-0.1_i386.deb (currently needed in unstable due to bug #518115) $ apt-get install build-essential linux-headers-2.6.28-1-686 $ mkdir temp; cd temp $ wget http://www.broadcom.com/docs/linux_sta/hybrid-portsrc-x86_32-v5_10_79_10.tar.gz $ tar xfvz hybrid-portsrc-x86_32-v5_10_79_10.tar.gz $ make -C /lib/modules/`uname -r`/build M=`pwd` clean $ make -C /lib/modules/`uname -r`/build M=`pwd` modules
If that worked, you can load the driver via:
$ rmmod bcm43xx; rmmod b43; rmmod b43legacy (you could also permanently blacklist these modules) $ modprobe ieee80211_crypt_tkip $ insmod ./wl.ko $ dmesg wl: module license '' taints kernel. wl 0000:05:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 wl 0000:05:00.0: setting latency timer to 64 eth1: Broadcom BCM4315 802.11 Wireless Controller 18.104.22.168
You can now run iwconfig, iwlist, etc. from the command line, or use some GUIs such as kwifimanager.
In order to disable wireless, run:
$ rmmod wl
So far, I only tested WEP (but not WPA).
Works out of the box using the acpi_cpufreq driver. Use cpufreq-set -c 0 -g performance if you need full CPU power, cpufreq-set -c 0 -g powersave otherwise. Use -c 1 to do the same with the other CPU/core.
Works fine out of the box using the pcspkr module, tested with beep.
Works out of the box using the intel X.org driver.
$ xrandr Screen 0: minimum 320 x 200, current 1024 x 600, maximum 1024 x 1024 VGA disconnected (normal left inverted right x axis y axis) LVDS connected 1024x600+0+0 (normal left inverted right x axis y axis) 195mm x 113mm 1024x600 60.0*+ 800x600 60.3 640x480 59.9 TV disconnected (normal left inverted right x axis y axis)
DRI works out of the box with the (mainline, open-source) driver:
$ glxinfo | grep direct direct rendering: Yes
If you attach an external monitor or projector, you can enable it using xrandr as usual:
$ xrandr --output VGA --auto
You can also use a dual-head setup by adding this to your "Screen" section in /etc/X11/xorg.conf:
SubSection "Display" Virtual 2048 2048 EndSubSection
After restarting the X server, you can play with xrandr and move the external screen (VGA) "below" the laptop's LCD screen (LVDS) for a simple dual-head setup. The GUI tools arandr or grandr are probably a bit simpler to use than plain command line xrandr.
Works fine, of course. The only small problem is that there are only two USB ports, more would have been better.
Works fine, it's an 80 GB SATA drive.
Works out of the box using the uvcvideo driver.
$ lsusb Bus 001 Device 005: ID 5986:0141 Acer, Inc $ modprobe uvcvideo uvcvideo: Found UVC 1.00 device Lenovo EasyCamera (5986:0141) input: Lenovo EasyCamera as /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/input/input9 usb 1-3: New USB device found, idVendor=5986, idProduct=0141 usb 1-3: New USB device strings: Mfr=3, Product=1, SerialNumber=0 usb 1-3: Product: Lenovo EasyCamera usb 1-3: Manufacturer: BISON Corporation
You can use luvcvideo for webcam viewing.
Lasts for ca. 3.5 hours, probably less if the system is under high load.
Fn+CursorUp / Fn+CursorDown (brightness), Fn+ESC (enable/disable webcam), Fn+F1 (sleep mode), Fn+F2 (enable/disable TFT backlight), Fn+F6 (enable/disable thouchpad), Fn+F7 (Num lock), Fn+F8 (scroll lock), and Fn+F11 (F12 key) all work fine.
Fn+F3, Fn+F5, Fn+F9, Fn+F10, and all other special keys are untested.
The power, disk activity, CAPS lock, Num lock, and battery charging LEDs all work fine out of the box.
-[0000:00]-+-00.0 Intel Corporation Mobile 945GME Express Memory Controller Hub [8086:27ac] +-02.0 Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] +-02.1 Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller [8086:27a6] +-1b.0 Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller [8086:27d8] +-1c.0-[0000:02]----00.0 Broadcom Corporation NetLink BCM5906M Fast Ethernet PCI Express [14e4:1713] +-1c.1-[0000:03-04]-- +-1c.2-[0000:05]----00.0 Broadcom Corporation BCM4312 802.11b/g [14e4:4315] +-1d.0 Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 [8086:27c8] +-1d.1 Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 [8086:27c9] +-1d.2 Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 [8086:27ca] +-1d.3 Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 [8086:27cb] +-1d.7 Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller [8086:27cc] +-1e.0-[0000:06]-- +-1f.0 Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge [8086:27b9] +-1f.1 Intel Corporation 82801G (ICH7 Family) IDE Controller [8086:27df] +-1f.2 Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller [8086:27c4] \-1f.3 Intel Corporation 82801G (ICH7 Family) SMBus Controller [8086:27da]
All in all it's a really nice hardware, and it works (more or less) flawlessly without much hassle with recent distros/kernels.
Update 2009-03-22: Updated various sections, added more info. Added resources section.
I've been planning to write about building custom ARM toolchains for a while (I used stuff from gnuarm.com in the past, but I switched to the lastest and greatest upstream versions at some point). Among other things, recent upstream versions now have ARM Cortex support.
First you will need a few base utilities and libs (this list may not be complete):
$ apt-get install flex bison libgmp3-dev libmpfr-dev libncurses5-dev libmpc-dev autoconf texinfo build-essential
Then you can use my tiny build-arm-toolchain script, which will download, build, and install the whole toolchain:
$ cat build-arm-toolchain #!/bin/sh # Written by Uwe Hermann <firstname.lastname@example.org>, released as public domain. [...]
The final toolchain is located in /tmp/arm-cortex-toolchain per default, and is ca. 170 MB in size. I explicitly created the build script in such a way that it minimizes the amount of disk space used during the build (ca. 1.2 GB or so, compared to more than 3 GB in the "naive" approach).
Using the "-j 2" option for make (see script) you can speed up the build quite a bit on multi-core machines (ca. 30 minutes vs. 60 minutes on an AMD X2 dual-core box). Also, you can change the script to build for other target variants if you want to (arm-elf or arm-none-eabi, for example).
Oh, and while I'm at it — does anybody have any idea why there are no pre-built toolchains for embedded (microcontroller) ARM targets in Debian? There are some toolchains for other microcontroller architectures (avr, m68hc1x, h8300, z80) but not too much other stuff. Is there some specific reason for the missing ARM toolchains (other than "nobody cared enough yet")?
I have heard about Emdebian, but from a quick look that seems to be more intended for toolchains with Linux/libc, not for microcontroller firmware (i.e. no MMU, no Linux, no libc etc.), but maybe I'm wrong?
Stuff I didn't expect I'd had to type today:
$ dpkg-repack dpkg-repack
It's been announced at quite a few places, so you probably already heard about it: Miro 2.0, the new major release of the cross-platform Internet RSS audio/video aggregator and player has been released.
Miro is available for Linux, Windows, and Mac OS X, the new release on Linux now features a "native" GTK+ widgets UI (instead of the Mozilla-based HTML widgets of earlier versions) and supports both a xine, as well as gstreamer renderer (for audio and video).
I won't even attempt to list all the improvements and new features, please check the release notes and the feature list for details. Overall more than 670 issues have been fixed since the last 1.2.x series release.
You can also watch this video (Ogg Theora, 10 MB) for a short introduction in Miro 2.0.
Finally, I have uploaded a new Miro 2.0 Debian package to unstable yesterday, by now it should be available from most mirrors. For Debian we're defaulting to xine at the moment, but please consult README.Debian if you want to switch to the gstreamer backend.
Please test the new release extensively so the few remaining issues (if any) can be ironed out soon...