Bullseye update, HDMI not available, display unclaimed, HD Graphics 520 llvmpipe

MartialD · 06-13-2020, 02:00 AM

Hi, I just upgrade to debian bullseye and my HDMI port is not found anymore (It was working with previous Buster)
intel HD graphic 520 drivers issue, Debian Bullseye, *-display UNCLAIMED, no HDMI

xrandr

Quote:

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected primary 1920x1080+0+0 0mm x 0mm
1920x1080 0.00*

lshw

Quote:

description: Notebook
product: 20F5A15GSG (LENOVO_MT_20F5_BU_Think_FM_ThinkPad X260)
vendor: LENOVO
version: ThinkPad X260
serial: PC0FKX5D
width: 64 bits
*-display UNCLAIMED
description: VGA compatible controller
product: Skylake GT2 [HD Graphics 520]
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 07
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list
configuration: latency=0
resources: memory:f0000000-f0ffffff memory:e0000000-efffffff ioport:e000(size=64) memory:c0000-dffff

lspci -nnk | grep -A3 VGA

Quote:

00:02.0 VGA compatible controller [0300]: Intel Corporation Skylake GT2 [HD Graphics 520] [8086:1916] (rev 07)
Subsystem: Lenovo Skylake GT2 [HD Graphics 520] [17aa:504a]
Kernel modules: i915
00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller [8086:9d2f] (rev 21)

Please help, I have not found any working solution on different forums so far and I need this HDMI external screen. Thank you

ondoho · 06-15-2020, 03:33 PM

That sort of intel thinkpad should "Just Work".
Have you done some sort of graphics or Xorg configurations earlier, that could have influenced this?
Also, full output of `lspci -k` please.

edit:
sorry, is the internal screen still working as expected? Only an external HDMI screen wouldn't?

MartialD · 06-15-2020, 10:48 PM

Thank you for your answer. I agree it should just work...

The problem get worst and better since last thread. By re-installing xserver I have manged to have the HDMI working but only when with the kernel (5.6.0-2-amd64 (recovery mode)), the GUI does not start anymore in standard mode...

When starting in recovery mode the Graphics (driver?) shown in Settings/About is 'Mesa Intel® HD Graphics 520 (SKL GT2)', I think to remember it was llvmpipe somethink when I could start in normal mode.

The output of lspci -k in recovery mode is:

Quote:

00:02.0 VGA compatible controller: Intel Corporation Skylake GT2 [HD Graphics 520] (rev 07)
Subsystem: Lenovo Skylake GT2 [HD Graphics 520]
Kernel driver in use: i915
Kernel modules: i915

The output of lspci -k in normal mode (tty):

Quote:

00:02.0 VGA compatible controller: Intel Corporation Skylake GT2 [HD Graphics 520] (rev 07)
Subsystem: Lenovo Skylake GT2 [HD Graphics 520]
Kernel modules: i915

The 'Kernel driver in use: i915' is missing in that not working case.

Thank you in advance for your help

VinceBassman · 06-16-2020, 12:06 AM

I have exactly the same configuration (Lenovo X260 with HG graphics 520) and I am facing exactly the same problem since the last update.
My external monitor is limited to max. 1024x768. Until last update it was working perfectly and I did not touch anything and customize anything through graphics or Xorg configuration.

Output of `lspci -k`

Quote:

00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers (rev 08)
Subsystem: Lenovo Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers
Kernel driver in use: skl_uncore
00:02.0 VGA compatible controller: Intel Corporation Skylake GT2 [HD Graphics 520] (rev 07)
Subsystem: Lenovo Skylake GT2 [HD Graphics 520]
Kernel driver in use: i915
Kernel modules: i915
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
Subsystem: Lenovo Sunrise Point-LP USB 3.0 xHCI Controller
Kernel driver in use: xhci_hcd
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
Subsystem: Lenovo Sunrise Point-LP Thermal subsystem
Kernel driver in use: intel_pch_thermal
Kernel modules: intel_pch_thermal
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
Subsystem: Lenovo Sunrise Point-LP CSME HECI
Kernel driver in use: mei_me
Kernel modules: mei_me
00:16.3 Serial controller: Intel Corporation Device 9d3d (rev 21)
Subsystem: Lenovo Device 504a
Kernel driver in use: serial
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
Subsystem: Lenovo Sunrise Point-LP SATA Controller [AHCI mode]
Kernel driver in use: ahci
Kernel modules: ahci
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #1 (rev f1)
Kernel driver in use: pcieport
00:1c.2 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #3 (rev f1)
Kernel driver in use: pcieport
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
Subsystem: Lenovo Sunrise Point-LP LPC Controller
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
Subsystem: Lenovo Sunrise Point-LP PMC
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
Subsystem: Lenovo Sunrise Point-LP HD Audio
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
Subsystem: Lenovo Sunrise Point-LP SMBus
Kernel modules: i2c_i801
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection I219-LM (rev 21)
Subsystem: Lenovo Ethernet Connection I219-LM
Kernel driver in use: e1000e
Kernel modules: e1000e
02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)
Subsystem: Lenovo RTS522A PCI Express Card Reader
Kernel driver in use: rtsx_pci
Kernel modules: rtsx_pci
04:00.0 Network controller: Intel Corporation Wireless 8260 (rev 3a)
Subsystem: Intel Corporation Wireless 8260
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi

Otherwise yes, the internal screen is working as expected. That behaviour did not change...Indeed only the external monitor is having the issue.
Hope you can help because this limitation in low resolution is very annoying... Thanks.

VinceBassman · 06-16-2020, 04:22 PM

It is definitely because of the last kernel update 5.3.0-59-generic. This problem disappears by switching back to the previous kernel... My external monitor is well recognized and the resolution is set correctly.
Wait for the next kernel update?

ondoho · 06-17-2020, 12:20 AM

Since you're both running Debian testing you have to expect this sort of bumpiness every now and then.
Thanks for reporting it, but it would be better reported to a Debian testing mailing list.