Hello all,

I installed Debian 6.0.4 on my Dell XPS 502L. I had 2 initial problems, which where no sound at all and missing screen resolutions...

I've search the net and found that I could install the new kernel 2.6.39-bpo.2-amd64. I installed it and now my 2 problems disappeared. Except now my graphics work very slow!!

Can someone help me?

Thanks a lot.

At first you have to help us with giving more information on your system.
Which graphics hardware do you have?
Which driver are you using?

Ok, this is my lspci output:

00:00.0 Host bridge: Intel Corporation Sandy Bridge DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Sandy Bridge PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Sandy Bridge Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation Cougar Point HECI Controller #1 (rev 04)
00:1a.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation Cougar Point High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 1 (rev b5)
00:1c.1 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 2 (rev b5)
00:1c.3 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 4 (rev b5)
00:1c.4 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 5 (rev b5)
00:1c.5 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 6 (rev b5)
00:1d.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation Cougar Point LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation Cougar Point 6 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation Cougar Point SMBus Controller (rev 05)
01:00.0 VGA compatible controller: nVidia Corporation Device 0df4 (rev a1)
03:00.0 Network controller: Intel Corporation Device 008a (rev 34)
04:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)

Thanks again!

This seems to be a laptop with Optimus technology, sorry I can't help with that.

Thank you anyway...

My videos don't work either, and it's not a plugin problem, because with the other kernel, they play fine...

Can someone help me?

What driver is used in your system for video card? Maybe it's a problem with it.
Try lsmod command (as root).
Optimus, if I remember correctly, is a technology that uses two graphics cards, an integrated Intel ( in the chipset or the processor itself, do not know exactly) and a dedicated Nvidia.
The idea is that the system uses integrated graphics processor when not running programs that require more resources and then switches to dedicated GPU (Nvidia) when you need more graphics processing power.
Check and the power management settings.
I think it's a problem with video driver. It's just an opinion, it is likely that I'm wrong.

My lsmod output is:

Module Size Used by
usbhid 39946 0
hid 72745 1 usbhid
parport_pc 22191 0
ppdev 12725 0
lp 17190 0
parport 31650 3 parport_pc,ppdev,lp
bridge 65614 0
stp 12392 1 bridge
bnep 17424 2
rfcomm 32744 8
acpi_cpufreq 12849 0
mperf 12411 1 acpi_cpufreq
cpufreq_userspace 12576 0
cpufreq_stats 12762 0
cpufreq_conservative 13147 0
cpufreq_powersave 12454 0
binfmt_misc 12914 1
uinput 17392 1
fuse 61554 1
loop 22479 0
snd_hda_codec_hdmi 22174 1
snd_hda_codec_realtek 283734 1
joydev 17138 0
nouveau 515747 0
snd_hda_intel 25946 1
snd_hda_codec 67865 3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel
i915 329760 2
ttm 52224 1 nouveau
snd_hwdep 13148 1 snd_hda_codec
drm_kms_helper 26950 2 nouveau,i915
uvcvideo 57386 0
iwlagn 174851 0
videodev 66266 1 uvcvideo
media 18148 1 videodev
tpm_tis 13125 0
tpm 17756 1 tpm_tis
drm 166500 5 nouveau,ttm,i915,drm_kms_helper
i2c_i801 16870 0
btusb 17417 2
snd_pcm 67276 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
v4l2_compat_ioctl32 16575 1 videodev
mac80211 181270 1 iwlagn
i2c_algo_bit 12834 2 nouveau,i915
tpm_bios 12903 1 tpm
dell_laptop 12852 0
battery 13109 0
ac 12624 0
snd_seq 44678 0
dell_wmi 12477 0
power_supply 13475 4 nouveau,dell_laptop,battery,ac
bluetooth 107224 23 bnep,rfcomm,btusb
snd_timer 22658 2 snd_pcm,snd_seq
i2c_core 23766 7 nouveau,i915,drm_kms_helper,videodev,drm,i2c_i801,i2c_algo_bit
sparse_keymap 12760 1 dell_wmi
cfg80211 126244 2 iwlagn,mac80211
snd_seq_device 13155 1 snd_seq
snd 52324 11 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_seq,snd_t imer,snd_seq_device
processor 27431 9 acpi_cpufreq
evdev 17475 21
rfkill 19014 5 dell_laptop,bluetooth,cfg80211
pcspkr 12579 0
video 17553 2 nouveau,i915
button 12895 2 nouveau,i915
dcdbas 13256 1 dell_laptop
soundcore 13014 1 snd
psmouse 55199 0
snd_page_alloc 12969 2 snd_hda_intel,snd_pcm
wmi 13202 1 dell_wmi
serio_raw 12878 0
ext4 313064 2
mbcache 12930 1 ext4
jbd2 65105 1 ext4
crc16 12343 2 bluetooth,ext4
sg 25769 0
sd_mod 35644 4
sr_mod 21824 0
crc_t10dif 12348 1 sd_mod
cdrom 35134 1 sr_mod
xhci_hcd 59382 0
ahci 25089 3
libahci 22616 1 ahci
ehci_hcd 39487 0
libata 151572 2 ahci,libahci
usbcore 127203 6 usbhid,uvcvideo,btusb,xhci_hcd,ehci_hcd
scsi_mod 161557 4 sg,sd_mod,sr_mod,libata
thermal 17330 0
r8169 37356 0
mii 12675 1 r8169
thermal_sys 17939 3 processor,video,thermal

Thanks friend.

I see from your output that the system uses the Nouveau driver. I asked around and it seems that Optimus is not supported in Linux.
Try this: search if there is a physical switch somewhere on the laptop. That switch, if any, allows you to choose what video card to be used by system (Intel or Nvidia). I understand that this switch is called mux.
If the switch does not exist, is much harder. Here I have no idea. You can, however, in this case, search the Internet after the words switcheroo optimus. However, if this switch is, choose NVidia, since you have the Nouveau driver.
What laptop do you have (model, etc.)?