EdgyFeisty amd64 on Dell Latitude D820
Here's a list of what works, and what doesn't with Edgy (and now Feisty) on my Dell D820 laptop. Also, some fixes for known bugs.
In short, the amd64 version of Edgy is simply unusable out of the box and even the installer crashes most of the time. The 32-bit version does not seem to be affected. The only way to get around that is passing the notsc and no_timer_check options to the kernel. After than it becomes usable.
|Intel Core Duo 2 T7200 (2.0Ghz 667Mhz FSB)||Works with fix||Pass options notsc and no_timer_check or use newer kernel. Updated: No problem on Feisty.|
|2.0GB, DDR2-667 SDRAM||Works|
|15.4" WUXGA LCD display (1920x1200)||Works with fix||You need to install the 915resolution package to get 1920x1200, otherwise you're stuck with 1600x1200.|
|Intel 945GM graphics||Works with fix||X itself works out of the box, but you need to pass the -noacpi option to the X server, otherwise the display goes black when you close the lid (and never comes back). Updated: The "intel" driver now works on Feisty and is recommended. I use the "NoPM" server option and had no problem since then.|
|CD-RW/DVD+RW Drive||Works||Haven't tested too much, but it seems to work fine|
|Intel® 3945 802.11a/g Dual-Band Mini Card||Works but||Requires binary-only daemon provided with Ubuntu (driver is not merged and is a pain to compile if you want to use a custom kernel)|
|Broadcom Corporation NetXtreme BCM5752 Gigabit Ethernet PCI Express (rev 02)||Works|
|ICH7 Family Serial ATA Storage Controller IDE (rev 01)||Works|
|USB||Works||Tested with Extigy soundcard, mouse, printer, mass storage|
|Touchpad||Works but||I use proto=exps for the psmouse module, otherwise tapping doesn't work. Updated: Using the touchpad as synaptics now works with Feisty, but then docking/undocking causes tapping to no longer work. I'm stuck with using it as exps and reloading the module every time I dock/undock (anyone's got a fix for that?)|
|High Definition Audio Controller (rev 01), STAC9200 audio codec||Problems||Basic playback works, but problems in full-duplex mode and mixer is b0rked. Updated: One must use plug:front (instead of plughw:0,0) for the PCM mixer to work. Also, the Hg version (since May) of ALSA appears to work better with full-duplex, although it's not oerfect.|
|Suspend to RAM||Problems||It works sometimes, but sometimes it never wakes up. Updated: wake up works now, but things stop working sometimes, e.g. keyboard|
|Suspend to disk (hibernate)||Problems||Tried once, didn't work. Haven't investigated|
|Docking/Undocking||Problems||Was completely broken with Edgy. Now with Feisty, the main problem I have is with the touchpad (see above).|
While the 32-bit Edgy kernel runs find on this machine, the 64-bit one is totally broken by default. There are two problems:
1) X hangs every now and then, usually after clicking on a button. dmesg also reports clock problems. This is solved by passing the "notsc" kernel option.
2) Kernel crashes on any ACPI event. Whether I close the lid or plug/unplug the AC adaptor, the kernel crashes right away with nothing printed on the console. This problem is fixed by passing the "no_timer_check" kernel option.
It seems like kernels from both Debian Etch and Fedora Core 6 are also affected. Stock kernel 2.6.19rc6 (which I'm running now) isn't affected.
Soundcard problems (Intel HDA)
The D820 ships with an on-board Intel HDA card (Sigmatel STAC 9200 codec). Alsa support for that card is currently (as shipped with Edgy or ALSA 1.0.13) very buggy. The PCM control does not work. When I plug in the headphones, I can still hear the audio from both the internal speakers and the headphones. Also, trying to do full-duplex results in a lot of xruns. I don't have any fix for that yet. If anyone knows how to get it to work, please reply here.
Seems like the X server is now trying to handle some ACPI events. Unfortunately, the ACPI event generated when I open or close the lid just kills X. To fix the problem, I had to edit /etc/X11/gdm/gdm.conf and add the -noacpi to the X command line (there are three different command lines, so you need to add it to the one being used).
Just after installing Edgy, all my X server could do was 1600x1200. To get the full 1920x1200 resolution, I had to install the 915resolution package.
Software for AMD64
Overall, the software works pretty well. The only things that don't work ATM are the ones that involve closed-source software. No acroread, flash (the ad display plugin) and binary codecs for MPlayer. So far, I can live without those without too much problem.