I have an AMD Radeon video card with HDMI, which doesn't seem to function anymore.It has been working, and still works if I boot from the original install cd. When I review the hardware information: "Driver Status: radeon is not active".
When I search the web, I usually find threads about the HDMI giving sound problems. That is not it.
The problem is probably also the user. The system is frequently used and I am a bit careful on trying too much without the necessary cautiousness, as my other system is experiencing HW issues/bad RAM currently....
I only found one article on the distri's site: https://en.opensuse.org/SDB:Radeon#R...ver_if_present , but just hesitant in trying as I need this system now. With the right advice?

Extracted a Search on haswell, radeon en graphics from the hardware information:

P: /devices/pci0000:00/0000:00:01.0/0000:00:01.0cie08
E: DEVPATH=/devices/pci0000:00/0000:00:01.0/0000:00:01.0cie08
E: SUBSYSTEM=pci_express

P: /devices/pci0000:00/0000:00:01.0/0000:01:00.0
E: DEVPATH=/devices/pci0000:00/0000:00:01.0/0000:01:00.0
E: ID_MODEL_FROM_DATABASE=Venus PRO [Radeon HD 8850M / R9 M265X]
E: ID_PCI_CLASS_FROM_DATABASE=Display controller
E: ID_PCI_SUBCLASS_FROM_DATABASE=Display controller
E: ID_VENDOR_FROM_DATABASE=Advanced Micro Devices, Inc. [AMD/ATI]
E: MODALIAS=pci:v00001002d00006823sv00001179sd0000F945bc03sc80i00
E: PCI_CLASS=38000
E: PCI_ID=1002:6823
E: PCI_SLOT_NAME=0000:01:00.0
E: PCI_SUBSYS_ID=1179:F945
E: SUBSYSTEM=pci
E: USEC_INITIALIZED=58122

P: /devices/pci0000:00/0000:00:01.0/pci_bus/0000:01
E: DEVPATH=/devices/pci0000:00/0000:00:01.0/pci_bus/0000:01
E: SUBSYSTEM=pci_bus

P: /devices/pci0000:00/0000:00:02.0
E: DEVPATH=/devices/pci0000:00/0000:00:02.0
E: ID_MODEL_FROM_DATABASE=4th Gen Core Processor Integrated Graphics Controller
E: ID_PCI_CLASS_FROM_DATABASE=Display controller
E: ID_PCI_INTERFACE_FROM_DATABASE=VGA controller
E: ID_PCI_SUBCLASS_FROM_DATABASE=VGA compatible controller
E: ID_VENDOR_FROM_DATABASE=Intel Corporation
E: MODALIAS=pci:v00008086d00000416sv00001179sd0000F945bc03sc00i00
E: PCI_CLASS=30000
E: PCI_ID=8086:0416
E: PCI_SLOT_NAME=0000:00:02.0
E: PCI_SUBSYS_ID=1179:F945
E: SUBSYSTEM=pci
E: USEC_INITIALIZED=58146

P: /devices/platform/efi-framebuffer.0/graphics/fb0
N: fb0
E: DEVNAME=/dev/fb0
E: DEVPATH=/devices/platform/efi-framebuffer.0/graphics/fb0
E: ID_FOR_SEAT=graphics-platform-efi-framebuffer_0
E: ID_PATH=platform-efi-framebuffer.0
E: ID_PATH_TAG=platform-efi-framebuffer_0
E: MAJOR=29
E: MINOR=0
E: SUBSYSTEM=graphics
E: TAGS=:master-of-seat:seat:
E: USEC_INITIALIZED=67640

P: /devices/virtual/graphics/fbcon
E: DEVPATH=/devices/virtual/graphics/fbcon
E: SUBSYSTEM=graphics

19: PCI 00.0: 0600 Host bridge
[Created at pci.328]
Unique ID: qLht.vMsR0Aey5X5
SysFS ID: /devices/pci0000:00/0000:00:00.0
SysFS BusID: 0000:00:00.0
Hardware Class: bridge
Model: "Intel Haswell DRAM Controller"
Vendor: pci 0x8086 "Intel Corporation"
Device: pci 0x0c04 "Haswell DRAM Controller"
SubVendor: pci 0x1179 "Toshiba America Info Systems"
SubDevice: pci 0xf940
Revision: 0x06
Module Alias: "pci:v00008086d00000C04sv00001179sd0000F940bc06sc00i00"
Config Status: cfg=no, avail=yes, need=no, active=unknown

20: PCI 01.0: 0604 PCI bridge (Normal decode)
[Created at pci.328]
Unique ID: vSkL.+2kB7jC+ju2
SysFS ID: /devices/pci0000:00/0000:00:01.0
SysFS BusID: 0000:00:01.0
Hardware Class: bridge
Model: "Intel Haswell PCI Express x16 Controller"
Vendor: pci 0x8086 "Intel Corporation"
Device: pci 0x0c01 "Haswell PCI Express x16 Controller"
SubVendor: pci 0x1179 "Toshiba America Info Systems"
SubDevice: pci 0xf945
Revision: 0x06
Driver: "pcieport"
IRQ: 42 (no events)
Module Alias: "pci:v00008086d00000C01sv00001179sd0000F945bc06sc04i00"
Driver Info #0:
Driver Status: shpchp is active
Driver Activation Cmd: "modprobe shpchp"
Config Status: cfg=no, avail=yes, need=no, active=unknown

21: PCI 02.0: 0300 VGA compatible controller (VGA)
[Created at pci.328]
Unique ID: _Znp.bNqGbiii4g5
SysFS ID: /devices/pci0000:00/0000:00:02.0
SysFS BusID: 0000:00:02.0
Hardware Class: graphics card
Model: "Intel Haswell Integrated Graphics Controller"
Vendor: pci 0x8086 "Intel Corporation"
Device: pci 0x0416 "Haswell Integrated Graphics Controller"
SubVendor: pci 0x1179 "Toshiba America Info Systems"
SubDevice: pci 0xf945
Revision: 0x06
Memory Range: 0xf7400000-0xf77fffff (rw,non-prefetchable)
Memory Range: 0xd0000000-0xdfffffff (ro,non-prefetchable)
I/O Ports: 0xf000-0xf03f (rw)
IRQ: 255 (no events)
Module Alias: "pci:v00008086d00000416sv00001179sd0000F945bc03sc00i00"
Driver Info #0:
Driver Status: i915 is active
Driver Activation Cmd: "modprobe i915"
Config Status: cfg=no, avail=yes, need=no, active=unknown

22: PCI 03.0: 0403 Audio device
[Created at pci.328]
Unique ID: 3hqH.YLdk60JGYZ5
SysFS ID: /devices/pci0000:00/0000:00:03.0
SysFS BusID: 0000:00:03.0
Hardware Class: sound
Model: "Intel Haswell HD Audio Controller"
Vendor: pci 0x8086 "Intel Corporation"
Device: pci 0x0c0c "Haswell HD Audio Controller"
SubVendor: pci 0x1179 "Toshiba America Info Systems"
SubDevice: pci 0xf940
Revision: 0x06
Driver: "snd_hda_intel"
Driver Modules: "snd_hda_intel"
Memory Range: 0xf7c14000-0xf7c17fff (rw,non-prefetchable)
IRQ: 16 (33 events)
Module Alias: "pci:v00008086d00000C0Csv00001179sd0000F940bc04sc03i00"
Driver Info #0:
Driver Status: snd_hda_intel is active
Driver Activation Cmd: "modprobe snd_hda_intel"
Config Status: cfg=no, avail=yes, need=no, active=unknown

35: PCI 100.0: 0380 Display controller
[Created at pci.328]
Unique ID: VCu0.SHJp+I4MsM9
Parent ID: vSkL.+2kB7jC+ju2
SysFS ID: /devices/pci0000:00/0000:00:01.0/0000:01:00.0
SysFS BusID: 0000:01:00.0
Hardware Class: graphics card
Model: "ATI Radeon HD 8800M Series"
Vendor: pci 0x1002 "ATI Technologies Inc"
Device: pci 0x6823 "Radeon HD 8800M Series"
SubVendor: pci 0x1179 "Toshiba America Info Systems"
SubDevice: pci 0xf945
Memory Range: 0xe0000000-0xefffffff (ro,non-prefetchable,disabled)
Memory Range: 0xf7b00000-0xf7b3ffff (rw,non-prefetchable,disabled)
I/O Ports: 0xe000-0xefff (rw,disabled)
Memory Range: 0xf7b40000-0xf7b5ffff (ro,non-prefetchable,disabled)
IRQ: 255 (no events)
Module Alias: "pci:v00001002d00006823sv00001179sd0000F945bc03sc80i00"
Driver Info #0:
Driver Status: radeon is not active
Driver Activation Cmd: "modprobe radeon"
Config Status: cfg=no, avail=yes, need=no, active=unknown
Attached to: #20 (PCI bridge)

Thanks anyway!

You want to use proprietary driver or opensource?

As always, look at Xorg log to see what's going on. Use xrandr utility to see what displays are available.